@@NutritionMadeSimple find this interesting because, my husband eats so healthy, like basically Mediterranean diet with olive oil only. And I don't. Before we were together he was super healthy. I stirfry and deep fry alot with - canola oil and soy bean oil. I smother things in kewpie mayo; I eat Karage and katsu ect. In fact the healthies thing I eat is nato. He's black and I'm Japanese and white. My diet was literally killing him. Is it possible that it's inflammatory for black ppl? His LDL and HDL are so high and mine are all in side of the normal.
Finally a doctor who has really made a profoundly rational study of the subject! I thank and congratulate you for the research, and especially, conclusions.
At 24:16, you laugh at the risk the volunteers take when eating oil that is repeatedly heated, but just buy french fries at any fast food restaurant and you're getting the same stuff. Some go 2 weeks between oil changes.
I tell people that breathing is good for you, even essential for good health, but since I’m saying something positive about anything at all, they assume I’m being paid by big air
Very interesting and thorough video. Going through all these articles on the subject must have taken some time :) That someone goes through the actual research without prejudice is nice to see. Looking forward to watching more of your videos!
I always told people that gut issues has been researched decades ago and I knew the root cause is from conflict shocking stress, foods has nothing to do with it...if anything, the most dangerous foods to put in your mouth today is vegetables because of glyphosate, bill gates and his boys buying out the fields to grow more poison for our guts to get sick from this poison so we can than medicate with his prescription drugs..buy organic or preferably from farmers market
I appreciated your careful, balanced approach. You're the first person I've found on the subject who took a fair look at each perspective and came to a fair conclusion without condemning anyone. Thank you! 😊
IMO "seed oils" is simply a proxy for diet quality. If your diet ais high in seed oils it means you probably eat a lot of snack foods like chips, crackers, cookies and fast food. Not great if you are concerned with your health.
good point. also follow the money. large billion dollar industries pumping out processed foods and they all use seed oils because they are cheap and stable. Big red flag
I'm wondering how these oils are being consumed.. with high heat or just put onto foods? Also what is their sugar and refined carb intake during those trails? I think nutrition is so complex and there are so many factors to look at
Could you make a video on inflammation in general? How much influence do we really have and how can people with inflammatory conditions lower their inflammation as effectivly as possible (in addition to drugs) ? There is so much confusion- bone broth /greens/ fish oil etc....
Second this. There definitely 'seems' to be a lot of evidence for yoga, meditation etc having an inflammatory lowering effect. Though it would be great to get a properly vetted breakdown of what's actually effective and what's not. If you've taught us anything; it can be quite complex to get the real truth without the proper understand.
There isn't really "so much confusion" regarding inflammation. There's a ton of studies showing different nutraceuticals and food components can lower inflammation
I don't keep most oils out of my diet because of inflammatory issues, I keep them out because they are so costly in calories- being pure fat @ 9 calories a gram, I'd prefer to leave them out. But I'm not afraid of them- I might use a tsp of olive oil to cook my falafel in, or a small amount in a dressing. I prefer to get my fats from ground flax seeds, ground chia seeds, avocados, nuts and other seeds. But I never bought into all of the inflammatory rhetoric. Thanks for your video.
I have been into Immunology, immunotherapy and recent 7 years gerontology and metabolic therapy Research work in Asia. Total of 18 years. We are currently looking at the Japanese diet and the new "Green Zone" of the pool of southern China centenarians. Similarly with rice and grains that have "new" rice or "old" rice, seed oils production and expiry date do contribute to its oxidation and rancidity impact especially in tropical S E Asia. The shelf life after opening the bottle is crucial in terms of using the seed oils for clinical trials. All these trials will start with a fresh new bottle. Individual consumption at home for casual stir-frying or deep frying means the bottle of oil can last for a few months. Rancidity if mild cannot be easily detected by an average person especially so if they are senior or elderly (slightly impaired smell and taste). Dining out has also one risk of having adulterated seed oils that are not fit for consumption. Traditionally, the Japanese 1000 years ago did not use seed oils but mostly boiled their foods using soup based cooking methods. Thank you Gil 👍💓👏for your indepth research and awesome contents. Personally, moderation in consumption and buying and storing small bottles (not large) are my advice to those who stlll want to use seed oils. 🥰
That's an argument for storing them properly and not buying more than you can use within 4-6 months. If they are stored in a dark, cool place, the oxidation is much slower. Under refrigeration, you get almost double the shelf life, and some under refrigeration (like nut oils, sesame, and canola) can last 2-3 years.
My God...moderation is key? Since when?! Stop the presses! Tell the conservative "alternative facts" health nuts we've only just now discovered moderation! They've been living their lives thinking they're right about everything, I'm not sure how they're going to take this.
Europeans also traditionally have mostly boiled their food a long time ago. Usually a home, restaurant, or pub would have a pot perpetually on a fire and people would keep adding to it.
agreed, this was very well organized, and it's good he mentioned the longer-term studies, since some arguments against seed oils have suggested 8-12 week trials are not sufficient for any effects to measurably manifest. i avoid seed oils as a precautionary method (and also because they have no flavor) because omega-6 was not consumed in high concentrations in our ancestral environments--though the end of the video argues it's plausible our bodies nevertheless have a mechanism to maintain homeostatis with respect to the concentrations of resulting metabolites.
Thank you very much for the content. Could you please consider uploading a similar video on animal fats like lard, butter, etc.? What happens when someone cooks with these fats and keeps their corresponding calorie intake below the maximum advised level (10%), especially concerning inflammation or other long-term health issues? I have found papers on negative effects of those fats but they show high levels of consumption and, of course, there are other variables that make it confusing for someone without expertise. I would immensely appreciate your insights. Best wishes for you and the rest of the team.
Stumbled on this video today and I'm so glad I did. Thank you for keeping the principles of science alive and for doing all of the work compiling these studies. I wish there was more of this out there
The good scientist's conclusion is uncritical of seed oils health value BUT my gut feeling says seed oils are unhealthy. Make out of that what you will.
I'm a nutrition student and you're blowing my mind. Thank you for focusing on inflammation alone in this one. There is a lot of misinformation out there for sure!
There are like 20 studies there. What more do you want? If you you use massive samples then youll start whining its epidemiology. @@helderduarte213 its embarrassing. Just accept you're biased.
Thank you for addressing seed oils and inflammation. It would be great if you’d continue in this vein. I’m particularly interested in the effects of seed oils regarding cholesterol and heart disease, and also their potential effects upon the development of dementia and Alzheimer’s.
@@Trazynn There is actually massive amounts of rechearch on this, and it all points to the direction that replacing saturated fats with omega 6 LA is always beneficial considering cardiovascular diseases.
@@Nobody-Nowhere I believe that the Sat fats -> PUFA substitution only tends to have a statistically significant positive effect on blood markers for people consuming >10% of their daily calories from saturated fats. If you are already eating them in moderation then replacing them with PUFA sources won't help or hurt you
Is it me, or did every one of the trials merely have the participants add oil to their existing diet? If someone were consuming a standard American diet, I wouldn't expect a couple of tablespoons to make a meaningful difference since they're probably consuming four times that to begin with. My largest improvements were from removing oils not adding them.
several had wash-ins. and baseline markers would have to be high if the putative effect was already maxed out you saw improvements from removing oil itself? (or processed food?)
@@NutritionMadeSimple "you saw improvements from removing oil itself? (or processed food?)" My percentage body fat dropped from 18 to 11 percent, essential tremors went away, discomfort my an arthritic neck went away and Morton's Neuropathy in my feet went away and have remained that way for a few years. A1C below 5.0. Total cholesterol is up, but my HDL went from the mid 50s to around 100. I kept olive, coconut and olive oils, whole nuts and ditched the fruit, carbs and any additives beyond spices.
@@wisenber that makes sense. bear in mind it's perfectly possible to keep the weight down (with all its consequences incl. glucose metabolism) without the cholesterol rise. We have interviews scheduled with scientists who both research and eat low carb diets on these exact topics also perfectly possible to achieve it with or without seed oils but that's a non-issue as they're not necessary. congrats on the improvements!!
@@NutritionMadeSimple Thank you for that. I didn't really lose that much weight. I dropped about 14 lbs of fat, but I added about 12 lbs of muscle. Smaller pants but a bigger shirt. I'd had those essential tremors since my teens, and just a change of diet made them go away. The few times a year I stay, the tremors are back within two hours and take two days to go away again. The effects of food are fascinating.
Truly excellent summary, easy to understand and based on sensible and logical interpretation of the evidence. If only we had more channels and videos like this and less of the half-baked rubbish that infests our media these days! Please keep making this great content.
Wow this must have taken alot of time, well done. I'm kind of dissapointed that so few studies specified whether the oil was refined or not, and that there wasnt many comparing seeds to refined seed oils. I think thats where the interesting part lies. I'm worried that most of the positive molecules you would find in these seeds are lost during the refining process, and removing them from their protective shell exposes them to oxidation. Really hope you are going to make all those other videos you mentioned. Oxidation, cancer, and heart disease (that one is definitely contentious). If you're not already knee deep in the research, Martin Grootveldt has some really interesting research on frying with PUFA rich oils.
no one, we turn down all sponsors and deals, and there is no "recommendation" in this video only a thorough look at the evidence on the common question "are seed oils inflammatory in humans"
I like that you seem to not have a vested interest. However sighting studies that say 7% or 20% improvement from eating carrots, blueberries or redmeat sounds like hopefuls. Eating these 5 foods plus x you will be 500% more healthy. How are the seed oils processed, and if people knew would they eat them?
I stopped eating anything that could possibly have seed oil in it for 2 weeks and the really bad bloody ankle eczema I've had my whole life actually started getting much much better. Then I slipped up and ate a big bowl of chips and cookies, etc. and it came back in a couple days. Trying again now, and my ankle is getting much better after a couple weeks.
great example. problem could be any number of components of junky foods, from preservatives to coloring to flavorings. good reason to go easy on junk food. may have nothing to do with seed oil per se
@@NutritionMadeSimple True, but I've tried cutting out junk food, wheat, dairy, and other things in the past for weeks at a time with no benefit. However, this time, I targeted any kind of oil product other than tallow I rendered myself. I continued to eat popsicles and pancakes I made myself etc. It's obviously not a perfect experiment, but I am astonished at the results. I suppose I should wait until it completely heals up, then introduce in seed oil into my cooking to see if it causes it to return. But honestly, after decades of dealing with this, I don't know that I'd want to bring it back for science.
@@lucasgroves137 I tried adding seed oils back into my diet for 2 weeks to see if my eczema would come back. No effect after 2 weeks. I then tried eating dashida soup base which gave some effect. Then I started eating doritos and my eczema got significantly worse. Still not sure exactly what is causing it.
Answer: No. Not in the context of adequate energy balance. If you learn how to correctly interpret and rank scientific evidence, you won’t fall for nutrition bullsh*t.
Perhaps the problem goes deeper than serum inflammatory markers. Here is an interesting viewpoint from the BMJ: "Omega-6 vegetable oils as a driver of coronary heart disease: the oxidized linoleic acid hypothesis"
@@davidb9670 I can't remember if it's that piece or another one from the same authors where the reference makes the exact opposite point they intend (and it says it in the TITLE of the paper! in other words, the title of the paper they cite is the negation of the sentence they cite it for)
Gil, many thanks on your research as I have been spooked by the internet "doctors" that claim that this is a area of concern. Please keep on giving this information as it is important to living.
@@joecheffo5942 Correlation does not equal causation. Macular degeneration is often genetic and runs in families. Excessive exposure to UV rays can also cause it. Since most people consume seed oils most of their life, and some people develop macular degeneration and some don't, no one can definitely say that seed oils contribute to development. The only thing I've seen is a grant proposal arguing for a study in this area. I haven't seen any published conclusions, just a lot of speculations.
@RaveyDaveyGravy True. He's not the only one demonising seed oils to be fair. For now, I'm still inclined to stick to the least processed oils as possible, olive oil. But I am more confident in switching over from butter to a spread with less saturated fat, but butter does taste amazing.
In the course of your research, did you find any data on Avocado Oil? This is often referred to as a high temperature oil, and given the nature of fats in Avocados, I am curious how the oil compares to these other types in terms of inflammation markers and Omega-3/6 balance.
deaths from heart disease have fallen abruptly in the last ~70 years but there's still (much) work to be done stay tuned, we have a video dropping in the next few weeks addressing exactly this FAQ :)
Please answer me this. I have joint damage (x-ray diagnosed and visible) from some kind of arthritis, variously diagnosed as psoriatic and possibly Sjogren's or unknown. My inflammatory markers are well within the normal range. About 20-30 years ago I had a couple of years having high sed rates but that cleared up completely. As far as my blood work goes, I'm currently completely noninflammatory, yet I've had arthritic and other inflammatory problems for many years. How can someone have inflammatory problems with no abnormal markers? I've always been confused by this and no diagnosis can be pinpointed because of all blood work coming back within normal ranges. I've been tested for everything.
My biggest concern with the effects of oil on the body is its affect on endothelial cells in your arteries. Is this part of the inflammatory response? Or is it a whole different topic?
in all likelihood the rampant increase in intake of ultraprocessed foods (almost 60% of calories in the US now) and hypercaloric state that goes with it
I'm sure what you say is true. But here's my problem. Who paid for the studies you quote? Are the the Canola studies funding through the Canola growers assoc, or even a University from a province that grows a lot of Canola which in turn may get money from a growers assoc. Just ask'ng
The advent of the Industrial age brought us the Trans Fat, Processed and Refined Seed Oils/Wheat/Sugar, High Fructose Syrups and Cigarettes by the 20 packs. Prior to this heart disease was barely on the map. You do the math. It doesn't take a Phd or an MD to figure this one out. Stick to a whole foods, mostly unprocessed diet and if you eat a brownie at a picnic that was made with vegetable oil, it's not the end of the world (just don't do that often).
This seems really strange to me. Why is everyone claiming the completely opposite?! Is there other negative stuff instead of inflammation? What about the omega 3 to 6 ration in Blood cells? Mindblown 🤯
I just saw on huberman podcast that sugar, fructose , and artificial sweeteners aren't bad for you either. High Salt intake isn't bad unless someone has high blood pressure and now highly heated and processed oils aren't bad either? obesity and many health problems were supposedly from "processed foods" Seems there has been a total flip flop in the science and now they are saying that highly processed food isn't bad for us. I guess ill start going down to the local burger joint every day now and eat my highly salted canola oil burger with my sugar canola oil fries with my large diet soda. according to latest science its not a bad option.
hehe it's pretty unanimous that ultraprocessed foods in excess aren't a good idea. bear in mind this very video has a section emphasizing that dressing a salad with canola oil is 1 thing and eating twinkies or potato chips that happen to contain seed oil is another
so interesting and also heartbreaking as a former omega6 avoider.. but where do all those pro Omega 3 befenfit studies come from then ? Are there any or is it also just a made up thing from the petridish?
Pretty comical you say "hmmm how much did they pay people to eat oil reheated 20 times", like the average person doesnt pay to go to resturants that to do more then that regulary.
Exceptional summary on these trials-one caveat, one could also hypothesize that the inflammatory markers used are not specific enough to the target organ which is usually the endothelium to identify a response one way or the other. For instance, hsCRP comes predominantly from the liver in response to cytokines secreted by the target process so is an indirect measure (but an acute phase reactant). Inflammatory markers like CTACK, MCP, HGF, Eotaxin, FAS, FAS-Ligand, and IL-16 might be more appropriate as being more direct and sensitive. Still a great overview-thanks.
Yes, he’s a great researcher and presenter, but you have also given excellent evidence as to why I am more interested in feedback from practicing clinical doctors and patients. Research tends to limit material to predetermined outcomes as there is too much money at stake.
I avoid oils because I consider them basically very high but empty calories. It’s 9 calories per gram which is more that twice the calories of a gram of carbs at 4 calories per gram. Also, when I was a student I worked in fast food restaurants and chain restaurants, and they reuse their oils many times until they are basically brown in color. They simply strain the burnt solids every night and re-heat them the next day. I presume the big food and snack food companies do the same thing with their vats of oil when they deep fry their products. With the oil oxidation taking place every time they reheat the oil, that can’t be healthy.
And after they have used and reused this rancid oil, what do they do with it? I read that someone comes to collect it and then it is used in chicken feed and pig feed.
Hello Dr. Gill, Congratualtions on another brilliant video! Is it possible to look at coconut milk, dessicated coconut, and tender coconut impact on health? I know you have explained the spike in Apob lipids from coconut oil. However, culturally in India, particularly the Southern states ex. Kerala has one of the highest consumption of coconut and its subsidiaries yet they have the highest life expectancy in the entire country compared those states that don't grow or eat coconut. I am simply unable to understand how? If you could explore this aspect it would be great. Thank you once again. 😊 🙏
There are many factors that influence life expectancy. Affluence, social status and health care being some of the most important. Also, there are time lags to consider. How long have people been eating this way, or that way, before they die. And for how long are they sick before they die? Health expectancy can be more important than life expectancy.
Do the people of Kerala tend to eat lots of coconut as coconut--in other words, lots of coconut "meat" (the pulp), and not just coconut oil? It's possible that the high fiber content of the coconut counteracts the effects of the saturated fat content of its oil when consumed together (whole).
It is pretty interesting that the flaxseed oil RCT meta-analysis found an overall decrease in IL-6. That was worth my time. People don't seem to accept that the spirit of science is the best _current_ understanding. A bit of humility is required.
I think we must avoid hyper-focusing on which versus which. We are kinda getting to the level is Orthorexia. One of the strong observable changes we can see is that, human population and life expectancy drastically increased with the industrial revolution, the invention of synthetic fertiliser, pesticide, preservatives, food additives, etc. 😂
I watched people in Georgia eating fried food every day, particularly chicken. Yeah, they had health problems, everything from stomach pain and GERD to heart disease. Also, how were these oils manufactured? Cold-pressed? Hot-pressed? Solvent-extracted? First-pressed?
Wouldn't the studies have to be carried out on a group of people who never had oils in their diet, then have oils added to see the difference? Not on groups of people who have eaten oils since childhood?
FUTURE REQUEST: Please review the research on the effects of glyphosate ( RoundUp ) on our food supply and the prevalence of trace elements found in food products purchased.
The amount of meticulous research you put into these videos is really incredible! As far as I know the most valuable channel on nutrition at the moment. Also love that you always take time to explain scientific processes, and how they should be interpreted. Your work is much appreciated! :-)
Im not convinced tests for inflammation are to be trusted. I was told by a doctor l had no inflammation markers,but my knees were burning with pain. Somethings amiss .
I agree. I invested in Biotech companies and had to read a lot of papers very fast and to evaluate it. But Gil really does a big effort to present the scientific data from different perspectives. So before anybody start to criticize Gil, he/she should ask him/herself, if he/she did the 1/10 of the work done here. I hadn't, so I a happy with the results. I wish that there would be so many studies out there about infectious transmission. I fear, in the next pandemia we don't know what to do exactly and what not like in the past 3 years.
This is crazy. I’ve been avoiding soybean and canola oils for several years now. I do t even know where I heard the myth that they are inflammatory. Really frustrating but it has helped me to stop buying processed junk which is full of soybean and canola oil 🙂
Just cutting down the processed food is a good step in the right direction for overall health, since there's way more nonfood, unsafe garbage there, even if seed oil for harmless. Skittles are illegal in some countries due to the 2 yellow food colorings.
Well they aren’t going to be as good in junk food and they are probally GMO heavy pesticide if they are not non GMO or organic. Especially corn and soy in the US.
Understandable. I hate how much I understand from having an associates degree in Exercise Science and Nutrition. This is essential! People shouldn't have to get a degree's worth of understanding to accurately sift through and avoid the bullshit that companies sell in the grocery store! I see many arguments that try to link or show a correlation with the Obesity Epidemic with the rise in the use of vegetable and seed oils. I immediately counter that argument with the fact of the rise in snack foods and the culture around moving less and eating more. Just so happens many snack foods are made with seed oils. It's cheap for companies to mass produce these "foods" (I emphasis the quotes around "food" since they're energy dense and lack many vitamins and minerals and other nutrients) using oils, instead of animal fats, so yeah, of course there's a correlation with seed oil usage and increasing obesity. It's not the oils themselves though.
I am curious how many of these studies were done with heated oils, for up to at least 5 hours of heating, think in terms of a fryer that is on all day long, and even reused? Canola oil, blended oil, and peanut oil are the top oils used in restaurants. Restaurants will reuse oils until the oil is black.
Would love a video on the effect on weight gain or loss due to the high energy density of fats (from oils especially) and how it can impact cardiovascular disease (blood pressure, ApoB, etc). Thank you for your cogent and easy to follow lectures.
That is the crux of the problem. People don't like to face the reality of calories in/calories out. It's too frustrating and difficult for many people who struggle with weight issues.
Years ago, one of my doctors suggested that I should gain some weight. I heard that olive oil was benficial to health, so I started to pour it on my food like syrup on pancakes. I did gain more weight than ever before, but all around my belly. I knew that wasn't healthy, so I stopped doing that and lost the belly.
@@someguy2135 You probably already know this, but what areas you gain weight mainly comes down to genetics (assuming your hormone levels are healthy) and not the types of food you eat.
@@someguy2135instead you should have started eating more protein rich foods like legumes, nuts and seeds and startet resistance and weight training. Muscles would grow you get the extra weight and maybe even looked better. Just saying
Just go for no oil at all. I cook fatty meat and the fat cooks it with no oil required. I cook wings in an air fryer with no oil and they come out nice and crispy just like they were deep fried. Only oil I use is 100% Avocado oil for stove top popcorn.
It's interesting that most of the trials investigated are on subjects who already have metabolic disfunction. I suppose this applies to healthy people too I can't see why not. I have cognitive dissonance about welcoming a product as industrial as seed oils into my life I will admit, though the evidence is obviously compelling. Thanks for your hard work
You don't have to include it. I would even say there is better food you can eat instead (whole seeds). But if you have problems getting enough calories or it's in a (healthy) convenience product, you don't have to avoid it and it's a good option.
*Sad Paul saladino noises* edit: what about the other stuff people say about PUFA? there is the claim that they raise oxLDL since PUFA is more succeptable to oxidation and when comsuming higher amounts of PUFA LDL is comprised of them. Also there is the claim (y'know, saladino is onto this) that if cell membranes are made out of PUFA they are more succeptable to damage. And the 3rd claim is, that PUFA themselves oxidize and become lipid peroxides which are toxic. Would love to see something about these things too, since i believe that you can debunk these claims very easily (i cant).
"Seed Oils & Inflammation: a Hidden Driver of Heart Disease?" by High Intensity Health here on YT. Would like to hear that one to be taken apart even if I likely can imagine at least some of the objections (single study vs. meta analyses, mechanisms vs. outcomes of actual interventions etc.). Preferably in direct confrontation but that would be probably too much to ask for.
I appreciate your information and effort, but for me it doesn't matter, I will not consume these oils simply because of the aggressive industrial chemical transformation they go through. My rule of thumb is not to consume ultra-processed foods, this is the safest bet.
You use this old line of 'junk foods' Yet this has no meaning or definition bar prejudice. Until there is some content or process proven, as you like to do from real trials, there is no such thing as junk food. If for example using with flour not wholemeal classes something as 'junk' fine but then list ALL white bread as 'Junk'. Including home baked! Most of the line anti 'junk foods' is a snobby cooking attitude it seems to me. Their home processing being so much better than the commercial ones. So they think.
I love your honesty. Most of us simply want to manage our health. Getting clear unbiased information not influenced by current food fashion is sometimes hard.
thank you for presenting some meticulously researched material. Unfortunately there is quite a bit of FUD going around against seed oils (well intentioned or not)
I fell for this too I think in large part this is about money like everything in capitalism I can tell you this a 32 oz tub of canola based mayonnaise made by Dukes is $5 the 24 oz tub of avocado mayonnaise that I bought at the health food store was $17 so I think maybe that really helps to understand where this frenzy is coming from the avocado mayonnaise is more than three times the price of the canola based mayonnaise and by the way it doesn't taste any better it's not as if the avocado mayonnaise has his amazing taste it's actually a little subpar just to the regular Duke's Mayonnaise so you have to be careful because if I'm a company and I want sell a product that is three times the price of my competitors you better damn well know I need to come up with some reason to scare people into buying my product and paying that premium price so the next time I need to buy mayonnaise I will go back to Duke's canola based mayonnaise now having watch this video
Fabulous episode. I wish there was some good information on cancer in relationship to seed oils . I have always heard that seed oils , especially when over cooked, are carcinogenic. In general, are there any other ways in which seed oils might be harmful?
I wanted to add some info about heated fryer oils in the food industry based on my experience. When I was young I was a manager at a medium-sized fast food chain. We would fill the fryers with oil, and they would run at ~375F all day long, and we would change the oil every 2-3 days on average. I was later a manager at a grocery store with a hot food department, and had a similar experience - although we used the fryer less there so we only changed the oil on a weekly basis for the most part. Essentially, the more you fry, the quicker the oil starts to get filled with burnt sediment from the food. You can skim a lot of it out, but many particles are too small for the skimmer I guess, and eventually your oil begins to appear dark/dirty and can begin to affect the taste of the product, so you have to change it. I imagine at very well-run fast food franchises they have some very specific protocols, but where I worked, oil changes were based on a subjective assessment of the oil.
I've been in the industry myself, and I agree. I just wonder if the issue with inflammation isn't actually so much the oil, but the typical flour based batters that remain in the oil. With them being skimmed and broken down into such a small pieces maybe they uptake quicker into your system and that is where the inflammation is coming from. I don't know, I'm just a student of TH-cam U😄
@@timtinsley1800 I am also wondering about how the oil changes chemically every time it is heated. There must be some kind of chemical breakdown/reaction that occurs each time the oil is heated. Are there any studies on that?
Thank you so much for making these videos. It’s so valuable to have someone who understands the methods and how to interpret and validate the studies on health and nutrition. Honest and unbiased, this channel is an island of truth and usable information in a sea of misinformation, clickbait, and snake oil sales. Ah, you didn’t include a study which compares snake oil to seed oils 😂
I think it's a serious issue in the evidence base that very few studies were following the pattern of beginning their treatments by removing all "extracted" oils (i.e. not part of whole food sources) from the diet, and logging typical fat intake, cooking methodologies, frequency of eating out, etc, before the study. I am personally convinced wholly by the study which took its participants through a low-oil control diet first before putting them on the uncooked oil treatment. But on the topic of inflammation from e.g. cooked oils, surely we should do this as well! Cooking oils are essentially universal at this point, and deep fried food is everywhere as well. I highly doubt a capsule of deep-fried oil is going to make a significant difference in the inflammation levels of someone who was already eating KFC every evening for dinner. I have a love for `chilli oil' as made in Chinese cuisines. Despite my love for the taste, I have noticed that if I plop three tablespoons on some noodles and eat it for breakfast, it makes me feel absolutely awful for several hours. I cannot ignore the incredible complexity of chemistry in generally high-temperature, multi-ingredient situations. Surely many byproducts of all these tasty-making reactions are also at least mildly unhealthy. I recall seeing some time ago that potato, when deep-fried, is an unusually unhealthy food, particularly in comparison to itself when steamed or boiled, due to the formation of `advanced glycation end-products'. I assume my chilli oil has a decent bit of those as well!
OR, maybe your body can't handle digesting 300 calories worth of fat in one meal (or it could be chili). Many people have trouble digesting fats. You would have to do a strict controlled trial making the chili sauce with various fats, testing those in one trial and then doing a comparison trial of plain oils with no other ingredients. Anecdotes are not evidence of anything.
Do the studies say anything about the source of the oils? For example - brand, organic, GMO, cold-pressed, method of extraction, etc? Could those details cause a significant variance in results that were obtained in people?
Alright, here is a question. If they did a study and gave cigarettes to a number of people and compared it to those that don't smoke to see if cigarettes leads to cancer, will they find an increase in cancer after 4 months? Especially if you get them to smoke only a quarter of a cigarette per day? most of these studies are only a few months long and ask the participants to take a table spoon each day.
What about a video on what exactly makes junk food so unhealthy? Is it the sugar? The white flour? The fat? The combination and in whatlevels? The lack of fibre? The high calories?
Exactly. FIND THE MECHANISM. That’s science. Not “moderation of everything and anything that can be shoved down your windpipe without immediate toxicity.”
Just wanted to pop in and say thanks for the videos you’ve made and are making. It can sometimes be hard to discern truth from fiction especially when many of us don’t have a background in a medical field. 10/10
my health, not to mention my mental health decreases due to the conflicting messages I get from all the differing dietary "guidelines". lol, having said that, I appreciate this channel. This guy should be invited by Joe Rogan on to his podcast to stir around Joe's brain cells as much as mine, because I know Rogan is not a fan of seed oils
Is “not significant change” means there was some change in the inflammation markers but researchers used that sentence instead showing exactly the difference that it made.
I would like to see a study on whether comments about seed oils are inflammatory. 😊
comment of the day
They can lead to pretty painful inflammation, it seems, but It would be great if the evidence based comments are the most infectious.
@@NutritionMadeSimple find this interesting because, my husband eats so healthy, like basically Mediterranean diet with olive oil only. And I don't. Before we were together he was super healthy. I stirfry and deep fry alot with - canola oil and soy bean oil. I smother things in kewpie mayo; I eat Karage and katsu ect. In fact the healthies thing I eat is nato. He's black and I'm Japanese and white. My diet was literally killing him. Is it possible that it's inflammatory for black ppl? His LDL and HDL are so high and mine are all in side of the normal.
😂😂
@@longlostcoder6322maybe not because he's black, but maybe something unique to him?
Finally a doctor who has really made a profoundly rational study of the subject! I thank and congratulate you for the research, and especially, conclusions.
At 24:16, you laugh at the risk the volunteers take when eating oil that is repeatedly heated, but just buy french fries at any fast food restaurant and you're getting the same stuff. Some go 2 weeks between oil changes.
I tell people that breathing is good for you, even essential for good health, but since I’m saying something positive about anything at all, they assume I’m being paid by big air
But then too much air is bad for you (hyperventillation), according to eg. the Buteyko system.
Maybe that's just hot air 😂
How dare you air your grievances in this way. I’m getting inflamed.
You've inspired me.
Big Air is up to it again.
Thanks for filtering thru all this research, very enlightening! Love your "no opinion" attitude. No drama! Refreshing and clear.
You do like an entire lit review for each video, I’m in awe ❤️
Very interesting and thorough video. Going through all these articles on the subject must have taken some time :) That someone goes through the actual research without prejudice is nice to see. Looking forward to watching more of your videos!
this video was a couple years in the making... :)
@@NutritionMadeSimple Unbelievable
@@NutritionMadeSimple 😮
I always told people that gut issues has been researched decades ago and I knew the root cause is from conflict shocking stress, foods has nothing to do with it...if anything, the most dangerous foods to put in your mouth today is vegetables because of glyphosate, bill gates and his boys buying out the fields to grow more poison for our guts to get sick from this poison so we can than medicate with his prescription drugs..buy organic or preferably from farmers market
@@NutritionMadeSimple omg!! Your amazing!
I appreciated your careful, balanced approach. You're the first person I've found on the subject who took a fair look at each perspective and came to a fair conclusion without condemning anyone. Thank you! 😊
IMO "seed oils" is simply a proxy for diet quality. If your diet ais high in seed oils it means you probably eat a lot of snack foods like chips, crackers, cookies and fast food. Not great if you are concerned with your health.
so true
You have not seen my combination of spaghetti olive oil and garlic 😁 I definitly exceed the 500kcal from oil in these days with any junk
good point. also follow the money. large billion dollar industries pumping out processed foods and they all use seed oils because they are cheap and stable. Big red flag
@@YaYippieYeah
LOL are you Italian or Greek? I’m sure if you don’t eat daily and it’s cold pressed your fine. And sounds good. 😉
Agree. I think culture also plays a role incl Indian, Italian and Greek. If fresh real/whole food used with the higher levels of oil can be healthy.
I'm wondering how these oils are being consumed.. with high heat or just put onto foods? Also what is their sugar and refined carb intake during those trails? I think nutrition is so complex and there are so many factors to look at
Isn't this connection between seed oils and inflammation a red herring? Should we not focus on impact of seed oils on heart health?
200%
yet this is the question everyone asks... so I guess it behooves us to answer it
CarnivoreMD was easily debunked lol.
MDs who push it should be removed from TH-cam before any more people get sick. This man, is one of the few sane doctors on here, in my opinion.
Could you make a video on inflammation in general? How much influence do we really have and how can people with inflammatory conditions lower their inflammation as effectivly as possible (in addition to drugs) ? There is so much confusion- bone broth /greens/ fish oil etc....
I was just about to comment this.
Yes, excellent comment.
Second this. There definitely 'seems' to be a lot of evidence for yoga, meditation etc having an inflammatory lowering effect. Though it would be great to get a properly vetted breakdown of what's actually effective and what's not. If you've taught us anything; it can be quite complex to get the real truth without the proper understand.
@@Engrave.Danger Did you use a lot of cold pressed seed oils prior to cutting it?
There isn't really "so much confusion" regarding inflammation. There's a ton of studies showing different nutraceuticals and food components can lower inflammation
I don't keep most oils out of my diet because of inflammatory issues, I keep them out because they are so costly in calories- being pure fat @ 9 calories a gram, I'd prefer to leave them out. But I'm not afraid of them- I might use a tsp of olive oil to cook my falafel in, or a small amount in a dressing. I prefer to get my fats from ground flax seeds, ground chia seeds, avocados, nuts and other seeds. But I never bought into all of the inflammatory rhetoric. Thanks for your video.
I have been into Immunology, immunotherapy and recent 7 years gerontology and metabolic therapy Research work in Asia. Total of 18 years. We are currently looking at the Japanese diet and the new "Green Zone" of the pool of southern China centenarians.
Similarly with rice and grains that have "new" rice or "old" rice, seed oils production and expiry date do contribute to its oxidation and rancidity impact especially in tropical S E Asia. The shelf life after opening the bottle is crucial in terms of using the seed oils for clinical trials. All these trials will start with a fresh new bottle. Individual consumption at home for casual stir-frying or deep frying means the bottle of oil can last for a few months. Rancidity if mild cannot be easily detected by an average person especially so if they are senior or elderly (slightly impaired smell and taste). Dining out has also one risk of having adulterated seed oils that are not fit for consumption.
Traditionally, the Japanese 1000 years ago did not use seed oils but mostly boiled their foods using soup based cooking methods.
Thank you Gil 👍💓👏for your indepth research and awesome contents.
Personally, moderation in consumption and buying and storing small bottles (not large) are my advice to those who stlll want to use seed oils. 🥰
That's an argument for storing them properly and not buying more than you can use within 4-6 months. If they are stored in a dark, cool place, the oxidation is much slower. Under refrigeration, you get almost double the shelf life, and some under refrigeration (like nut oils, sesame, and canola) can last 2-3 years.
My God...moderation is key? Since when?! Stop the presses! Tell the conservative "alternative facts" health nuts we've only just now discovered moderation!
They've been living their lives thinking they're right about everything, I'm not sure how they're going to take this.
My God... Moderation is key? SINCE WHEN?!
Europeans also traditionally have mostly boiled their food a long time ago. Usually a home, restaurant, or pub would have a pot perpetually on a fire and people would keep adding to it.
I've definitely been following the anti-seed oil bandwagon. Thanks for putting this episode together and giving me perspective.
agreed, this was very well organized, and it's good he mentioned the longer-term studies, since some arguments against seed oils have suggested 8-12 week trials are not sufficient for any effects to measurably manifest. i avoid seed oils as a precautionary method (and also because they have no flavor) because omega-6 was not consumed in high concentrations in our ancestral environments--though the end of the video argues it's plausible our bodies nevertheless have a mechanism to maintain homeostatis with respect to the concentrations of resulting metabolites.
Thank you very much for the content. Could you please consider uploading a similar video on animal fats like lard, butter, etc.? What happens when someone cooks with these fats and keeps their corresponding calorie intake below the maximum advised level (10%), especially concerning inflammation or other long-term health issues? I have found papers on negative effects of those fats but they show high levels of consumption and, of course, there are other variables that make it confusing for someone without expertise. I would immensely appreciate your insights. Best wishes for you and the rest of the team.
You would need a study on long term consumption, which would be hard to do.
@@Marr033No they do not.
Stumbled on this video today and I'm so glad I did. Thank you for keeping the principles of science alive and for doing all of the work compiling these studies. I wish there was more of this out there
The good scientist's conclusion is uncritical of seed oils health value BUT my gut feeling says seed oils are unhealthy. Make out of that what you will.
totally fine to leave them out as a personal choice
I'm a nutrition student and you're blowing my mind. Thank you for focusing on inflammation alone in this one. There is a lot of misinformation out there for sure!
You should check the amount of persons used on those trials. Kind hard to come to conclusions with such a few sample on all of those studies.
There are like 20 studies there. What more do you want? If you you use massive samples then youll start whining its epidemiology. @@helderduarte213 its embarrassing. Just accept you're biased.
@@helderduarte213Meta analyses.
Thank you for addressing seed oils and inflammation. It would be great if you’d continue in this vein. I’m particularly interested in the effects of seed oils regarding cholesterol and heart disease, and also their potential effects upon the development of dementia and Alzheimer’s.
100%. Came here to say this. Thank you.
There's very little research on this. Though some experts speculate that omega 6 fatty acids interact with cholesterol and oxidize it, which is bad.
@@Trazynn There is actually massive amounts of rechearch on this, and it all points to the direction that replacing saturated fats with omega 6 LA is always beneficial considering cardiovascular diseases.
@@Trazynn Isn't there a connection between oxidation and inflammation?
@@Nobody-Nowhere I believe that the Sat fats -> PUFA substitution only tends to have a statistically significant positive effect on blood markers for people consuming >10% of their daily calories from saturated fats. If you are already eating them in moderation then replacing them with PUFA sources won't help or hurt you
Is it me, or did every one of the trials merely have the participants add oil to their existing diet?
If someone were consuming a standard American diet, I wouldn't expect a couple of tablespoons to make a meaningful difference since they're probably consuming four times that to begin with.
My largest improvements were from removing oils not adding them.
several had wash-ins. and baseline markers would have to be high if the putative effect was already maxed out
you saw improvements from removing oil itself? (or processed food?)
@@NutritionMadeSimple "you saw improvements from removing oil itself? (or processed food?)"
My percentage body fat dropped from 18 to 11 percent, essential tremors went away, discomfort my an arthritic neck went away and Morton's Neuropathy in my feet went away and have remained that way for a few years. A1C below 5.0. Total cholesterol is up, but my HDL went from the mid 50s to around 100.
I kept olive, coconut and olive oils, whole nuts and ditched the fruit, carbs and any additives beyond spices.
@@wisenber that makes sense. bear in mind it's perfectly possible to keep the weight down (with all its consequences incl. glucose metabolism) without the cholesterol rise. We have interviews scheduled with scientists who both research and eat low carb diets on these exact topics
also perfectly possible to achieve it with or without seed oils but that's a non-issue as they're not necessary.
congrats on the improvements!!
@@NutritionMadeSimple Thank you for that.
I didn't really lose that much weight. I dropped about 14 lbs of fat, but I added about 12 lbs of muscle. Smaller pants but a bigger shirt.
I'd had those essential tremors since my teens, and just a change of diet made them go away. The few times a year I stay, the tremors are back within two hours and take two days to go away again.
The effects of food are fascinating.
Absolutely NOTHING surprising here.
Truly excellent summary, easy to understand and based on sensible and logical interpretation of the evidence. If only we had more channels and videos like this and less of the half-baked rubbish that infests our media these days! Please keep making this great content.
Wow this must have taken alot of time, well done. I'm kind of dissapointed that so few studies specified whether the oil was refined or not, and that there wasnt many comparing seeds to refined seed oils. I think thats where the interesting part lies. I'm worried that most of the positive molecules you would find in these seeds are lost during the refining process, and removing them from their protective shell exposes them to oxidation. Really hope you are going to make all those other videos you mentioned. Oxidation, cancer, and heart disease (that one is definitely contentious). If you're not already knee deep in the research, Martin Grootveldt has some really interesting research on frying with PUFA rich oils.
Great job Doctor. You are
worth your weight in gold!
A godsend for us fact seekers. Keep up the great work. Brian Z.
So you are reccomending oil from factories as opposed to animals - who is paying you?
no one, we turn down all sponsors and deals, and there is no "recommendation" in this video only a thorough look at the evidence on the common question "are seed oils inflammatory in humans"
I like that you seem to not have a vested interest. However sighting studies that say 7% or 20% improvement from eating carrots, blueberries or redmeat sounds like hopefuls. Eating these 5 foods plus x you will be 500% more healthy. How are the seed oils processed, and if people knew would they eat them?
I stopped eating anything that could possibly have seed oil in it for 2 weeks and the really bad bloody ankle eczema I've had my whole life actually started getting much much better. Then I slipped up and ate a big bowl of chips and cookies, etc. and it came back in a couple days. Trying again now, and my ankle is getting much better after a couple weeks.
great example. problem could be any number of components of junky foods, from preservatives to coloring to flavorings. good reason to go easy on junk food. may have nothing to do with seed oil per se
@@NutritionMadeSimple True, but I've tried cutting out junk food, wheat, dairy, and other things in the past for weeks at a time with no benefit. However, this time, I targeted any kind of oil product other than tallow I rendered myself. I continued to eat popsicles and pancakes I made myself etc. It's obviously not a perfect experiment, but I am astonished at the results. I suppose I should wait until it completely heals up, then introduce in seed oil into my cooking to see if it causes it to return. But honestly, after decades of dealing with this, I don't know that I'd want to bring it back for science.
@@stepheninczech yeah no need, oil not necessary in one's diet, totally fine to leave out as personal preference
@@stepheninczech Lol, thanks for the brutal honesty. No doubt there's a limit for most of us as to what we'll do for science. 😂
@@lucasgroves137 I tried adding seed oils back into my diet for 2 weeks to see if my eczema would come back. No effect after 2 weeks. I then tried eating dashida soup base which gave some effect. Then I started eating doritos and my eczema got significantly worse. Still not sure exactly what is causing it.
Answer: No. Not in the context of adequate energy balance.
If you learn how to correctly interpret and rank scientific evidence, you won’t fall for nutrition bullsh*t.
Are there other inflammation markers apart from crp? Could there still be inflammation with no elevated crp?.
They were shown
Ok,so if there's no change in any markers using ANY type of oil(including fish oil),where is all the hype about omega3s coming from?
Perhaps the problem goes deeper than serum inflammatory markers. Here is an interesting viewpoint from the BMJ: "Omega-6 vegetable oils as a driver of coronary heart disease: the oxidized linoleic acid hypothesis"
iirc I´ve gone through that exact editorial. if you have the time, compare the claims to the sources given. some will blow your mind
@@davidb9670 I can't remember if it's that piece or another one from the same authors where the reference makes the exact opposite point they intend (and it says it in the TITLE of the paper! in other words, the title of the paper they cite is the negation of the sentence they cite it for)
It’s a crime that some unscientific grifters get more views than your videos, incredibly thorough and well done.
Lol @ your username
Gil, many thanks on your research as I have been spooked by the internet "doctors" that claim that this is a area of concern. Please keep on giving this information as it is important to living.
There seems to be a strong connection between vegetable oils and macular degeneration. That “spooks” me a lot.
@@joecheffo5942 Wow. I wonder if it might be a trigger for certain genes?
@@joecheffo5942 Correlation does not equal causation. Macular degeneration is often genetic and runs in families. Excessive exposure to UV rays can also cause it. Since most people consume seed oils most of their life, and some people develop macular degeneration and some don't, no one can definitely say that seed oils contribute to development. The only thing I've seen is a grant proposal arguing for a study in this area. I haven't seen any published conclusions, just a lot of speculations.
@@joecheffo5942and an even stronger connection between Nicolas Cage movies and drownings. Spooky!
@joecheffo5942 I know this is an old comment, but can you share the research about this? Eye disease is concern here
Sten Ekberg has a video on how bad seed oils are for us, be good if you could critique it.
What does he know about it? The decathlete right? Now a chiropractor (a subject based on complete pseudoscience).
@RaveyDaveyGravy True. He's not the only one demonising seed oils to be fair. For now, I'm still inclined to stick to the least processed oils as possible, olive oil. But I am more confident in switching over from butter to a spread with less saturated fat, but butter does taste amazing.
In the course of your research, did you find any data on Avocado Oil? This is often referred to as a high temperature oil, and given the nature of fats in Avocados, I am curious how the oil compares to these other types in terms of inflammation markers and Omega-3/6 balance.
I’d like to know too. The avocado oil I have bought smokes pretty easy at medium heat, which it’s not supposed too.
I think from the video no oils appear inflammatory.
So if thats the case then why do we have so much heart disease? We stopped frying in natural fat many decades ago.
deaths from heart disease have fallen abruptly in the last ~70 years but there's still (much) work to be done
stay tuned, we have a video dropping in the next few weeks addressing exactly this FAQ :)
Please answer me this. I have joint damage (x-ray diagnosed and visible) from some kind of arthritis, variously diagnosed as psoriatic and possibly Sjogren's or unknown. My inflammatory markers are well within the normal range. About 20-30 years ago I had a couple of years having high sed rates but that cleared up completely. As far as my blood work goes, I'm currently completely noninflammatory, yet I've had arthritic and other inflammatory problems for many years. How can someone have inflammatory problems with no abnormal markers? I've always been confused by this and no diagnosis can be pinpointed because of all blood work coming back within normal ranges. I've been tested for everything.
My biggest concern with the effects of oil on the body is its affect on endothelial cells in your arteries.
Is this part of the inflammatory response? Or is it a whole different topic?
So what is behind the obesity epidemic, Type II diabetes and related?
in all likelihood the rampant increase in intake of ultraprocessed foods (almost 60% of calories in the US now) and hypercaloric state that goes with it
I'm sure what you say is true. But here's my problem. Who paid for the studies you quote? Are the the Canola studies funding through the Canola growers assoc, or even a University from a province that grows a lot of Canola which in turn may get money from a growers assoc. Just ask'ng
The advent of the Industrial age brought us the Trans Fat, Processed and Refined Seed Oils/Wheat/Sugar, High Fructose Syrups and Cigarettes by the 20 packs. Prior to this heart disease was barely on the map. You do the math. It doesn't take a Phd or an MD to figure this one out. Stick to a whole foods, mostly unprocessed diet and if you eat a brownie at a picnic that was made with vegetable oil, it's not the end of the world (just don't do that often).
People used to die young of infectious diseases etc. Heart disease shows up in later life
This seems really strange to me. Why is everyone claiming the completely opposite?! Is there other negative stuff instead of inflammation? What about the omega 3 to 6 ration in Blood cells? Mindblown 🤯
Please explain "inflammation" as you use the term here.
Can you explain the Israeli Paradox?
My favourite thing about this video is there is a 'coconut board'.
I just saw on huberman podcast that sugar, fructose , and artificial sweeteners aren't bad for you either. High Salt intake isn't bad unless someone has high blood pressure and now highly heated and processed oils aren't bad either? obesity and many health problems were supposedly from "processed foods" Seems there has been a total flip flop in the science and now they are saying that highly processed food isn't bad for us. I guess ill start going down to the local burger joint every day now and eat my highly salted canola oil burger with my sugar canola oil fries with my large diet soda. according to latest science its not a bad option.
hehe it's pretty unanimous that ultraprocessed foods in excess aren't a good idea. bear in mind this very video has a section emphasizing that dressing a salad with canola oil is 1 thing and eating twinkies or potato chips that happen to contain seed oil is another
so interesting and also heartbreaking as a former omega6 avoider.. but where do all those pro Omega 3 befenfit studies come from then ? Are there any or is it also just a made up thing from the petridish?
Pretty comical you say "hmmm how much did they pay people to eat oil reheated 20 times", like the average person doesnt pay to go to resturants that to do more then that regulary.
You are literally the best science channel I have found so far on YT!
Keep the insane work going!!!
Exceptional summary on these trials-one caveat, one could also hypothesize that the inflammatory markers used are not specific enough to the target organ which is usually the endothelium to identify a response one way or the other. For instance, hsCRP comes predominantly from the liver in response to cytokines secreted by the target process so is an indirect measure (but an acute phase reactant). Inflammatory markers like CTACK, MCP, HGF, Eotaxin, FAS, FAS-Ligand, and IL-16 might be more appropriate as being more direct and sensitive. Still a great overview-thanks.
Yes, he’s a great researcher and presenter, but you have also given excellent evidence as to why I am more interested in feedback from practicing clinical doctors and patients. Research tends to limit material to predetermined outcomes as there is too much money at stake.
Very interesting point! Great!
Eat the whole food ! Is that controversial ?
I can't accept this glorifying of omega-6 oils from someone who is anti-trans. 😁
The question is, how do these oils affect lipo proteins and cholesterol and heart disease
Also long term
I avoid oils because I consider them basically very high but empty calories. It’s 9 calories per gram which is more that twice the calories of a gram of carbs at 4 calories per gram. Also, when I was a student I worked in fast food restaurants and chain restaurants, and they reuse their oils many times until they are basically brown in color. They simply strain the burnt solids every night and re-heat them the next day. I presume the big food and snack food companies do the same thing with their vats of oil when they deep fry their products. With the oil oxidation taking place every time they reheat the oil, that can’t be healthy.
Never thought about it from a manufacturering stand point
That is correct, not only restaurants but also food manufacturers use their oils untill they can't. It's disgusting.
Without forgetting the 3 MCPD’s in refined oils
And after they have used and reused this rancid oil, what do they do with it? I read that someone comes to collect it and then it is used in chicken feed and pig feed.
@@johanneshonka3527 I read that this rancid oil is then used in chicken feed and pig feed. And we, in turn, eat the chickens and the pigs.
Yeah, not inflamation but how about oxidative stress?
We need to limit PUFA anyway.
oxidation/peroxidation will be covered in the next one(s) for sure
@@NutritionMadeSimple
Hello Dr. Gill,
Congratualtions on another brilliant video!
Is it possible to look at coconut milk, dessicated coconut, and tender coconut impact on health?
I know you have explained the spike in Apob lipids from coconut oil. However, culturally in India, particularly the Southern states
ex. Kerala has one of the highest consumption of coconut and its subsidiaries yet they have the highest life expectancy in the entire country compared those states that don't grow or eat coconut. I am simply unable to understand how?
If you could explore this aspect it would be great.
Thank you once again. 😊 🙏
Genetics and evolution probably explain a lot
Life expectancy is around 75 in kerala, it's just average
We don't care about 75s we need 90s even 100 duh
There are many factors that influence life expectancy. Affluence, social status and health care being some of the most important. Also, there are time lags to consider. How long have people been eating this way, or that way, before they die. And for how long are they sick before they die? Health expectancy can be more important than life expectancy.
World life expectancy rates based on diet are all bullshit. I'll bet most of India has not got access to vaccines and a+e healthcare
Do the people of Kerala tend to eat lots of coconut as coconut--in other words, lots of coconut "meat" (the pulp), and not just coconut oil? It's possible that the high fiber content of the coconut counteracts the effects of the saturated fat content of its oil when consumed together (whole).
It is pretty interesting that the flaxseed oil RCT meta-analysis found an overall decrease in IL-6. That was worth my time. People don't seem to accept that the spirit of science is the best _current_ understanding. A bit of humility is required.
I think we must avoid hyper-focusing on which versus which. We are kinda getting to the level is Orthorexia.
One of the strong observable changes we can see is that, human population and life expectancy drastically increased with the industrial revolution, the invention of synthetic fertiliser, pesticide, preservatives, food additives, etc. 😂
I watched people in Georgia eating fried food every day, particularly chicken. Yeah, they had health problems, everything from stomach pain and GERD to heart disease.
Also, how were these oils manufactured? Cold-pressed? Hot-pressed? Solvent-extracted? First-pressed?
Wouldn't the studies have to be carried out on a group of people who never had oils in their diet, then have oils added to see the difference?
Not on groups of people who have eaten oils since childhood?
FUTURE REQUEST: Please review the research on the effects of glyphosate ( RoundUp ) on our food supply and the prevalence of trace elements found in food products purchased.
The amount of meticulous research you put into these videos is really incredible! As far as I know the most valuable channel on nutrition at the moment. Also love that you always take time to explain scientific processes, and how they should be interpreted. Your work is much appreciated! :-)
I read malicious instead of meticious and i was about tho write a trantrum hahahaha
Im not convinced tests for inflammation are to be trusted. I was told by a doctor l had no inflammation markers,but my knees were burning with pain. Somethings amiss .
I agree. I invested in Biotech companies and had to read a lot of papers very fast and to evaluate it. But Gil really does a big effort to present the scientific data from different perspectives.
So before anybody start to criticize Gil, he/she should ask him/herself, if he/she did the 1/10 of the work done here. I hadn't, so I a happy with the results.
I wish that there would be so many studies out there about infectious transmission. I fear, in the next pandemia we don't know what to do exactly and what not like in the past 3 years.
This is crazy. I’ve been avoiding soybean and canola oils for several years now. I do t even know where I heard the myth that they are inflammatory. Really frustrating but it has helped me to stop buying processed junk which is full of soybean and canola oil 🙂
Just cutting down the processed food is a good step in the right direction for overall health, since there's way more nonfood, unsafe garbage there, even if seed oil for harmless. Skittles are illegal in some countries due to the 2 yellow food colorings.
Joe Rogan was a big perpetuator
Well they aren’t going to be as good in junk food and they are probally GMO heavy pesticide if they are not non GMO or organic. Especially corn and soy in the US.
@@jbarber1016"GMO" is another topic like seed oils. GMOs are not by default harmful.
Understandable. I hate how much I understand from having an associates degree in Exercise Science and Nutrition. This is essential! People shouldn't have to get a degree's worth of understanding to accurately sift through and avoid the bullshit that companies sell in the grocery store!
I see many arguments that try to link or show a correlation with the Obesity Epidemic with the rise in the use of vegetable and seed oils. I immediately counter that argument with the fact of the rise in snack foods and the culture around moving less and eating more.
Just so happens many snack foods are made with seed oils. It's cheap for companies to mass produce these "foods" (I emphasis the quotes around "food" since they're energy dense and lack many vitamins and minerals and other nutrients) using oils, instead of animal fats, so yeah, of course there's a correlation with seed oil usage and increasing obesity. It's not the oils themselves though.
I am curious how many of these studies were done with heated oils, for up to at least 5 hours of heating, think in terms of a fryer that is on all day long, and even reused? Canola oil, blended oil, and peanut oil are the top oils used in restaurants. Restaurants will reuse oils until the oil is black.
If you had watched the entire video you would know that. I don't understand commenting on a video that you haven't fully watched.
Hmmm - no significant change - but what if the people weren't eating sugars and carbs, what then?
Would love a video on the effect on weight gain or loss due to the high energy density of fats (from oils especially) and how it can impact cardiovascular disease (blood pressure, ApoB, etc). Thank you for your cogent and easy to follow lectures.
That is the crux of the problem. People don't like to face the reality of calories in/calories out. It's too frustrating and difficult for many people who struggle with weight issues.
Years ago, one of my doctors suggested that I should gain some weight. I heard that olive oil was benficial to health, so I started to pour it on my food like syrup on pancakes. I did gain more weight than ever before, but all around my belly. I knew that wasn't healthy, so I stopped doing that and lost the belly.
@@someguy2135 You probably already know this, but what areas you gain weight mainly comes down to genetics (assuming your hormone levels are healthy) and not the types of food you eat.
@@someguy2135 Did you have your cortisol levels tested when you had the belly fat? Wondering if it went up.
@@someguy2135instead you should have started eating more protein rich foods like legumes, nuts and seeds and startet resistance and weight training. Muscles would grow you get the extra weight and maybe even looked better. Just saying
Just go for no oil at all. I cook fatty meat and the fat cooks it with no oil required. I cook wings in an air fryer with no oil and they come out nice and crispy just like they were deep fried. Only oil I use is 100% Avocado oil for stove top popcorn.
It's interesting that most of the trials investigated are on subjects who already have metabolic disfunction. I suppose this applies to healthy people too I can't see why not. I have cognitive dissonance about welcoming a product as industrial as seed oils into my life I will admit, though the evidence is obviously compelling. Thanks for your hard work
You don't have to include it.
I would even say there is better food you can eat instead (whole seeds).
But if you have problems getting enough calories or it's in a (healthy) convenience product, you don't have to avoid it and it's a good option.
*Sad Paul saladino noises*
edit: what about the other stuff people say about PUFA? there is the claim that they raise oxLDL since PUFA is more succeptable to oxidation and when comsuming higher amounts of PUFA LDL is comprised of them. Also there is the claim (y'know, saladino is onto this) that if cell membranes are made out of PUFA they are more succeptable to damage. And the 3rd claim is, that PUFA themselves oxidize and become lipid peroxides which are toxic. Would love to see something about these things too, since i believe that you can debunk these claims very easily (i cant).
"Seed Oils & Inflammation: a Hidden Driver of Heart Disease?" by High Intensity Health here on YT. Would like to hear that one to be taken apart even if I likely can imagine at least some of the objections (single study vs. meta analyses, mechanisms vs. outcomes of actual interventions etc.). Preferably in direct confrontation but that would be probably too much to ask for.
I appreciate your information and effort, but for me it doesn't matter, I will not consume these oils simply because of the aggressive industrial chemical transformation they go through. My rule of thumb is not to consume ultra-processed foods, this is the safest bet.
totally fine to leave them out as personal preference
Wow... buuut I think I'll continue to avoid them. Call it a gut instinct.
You use this old line of 'junk foods' Yet this has no meaning or definition bar prejudice. Until there is some content or process proven, as you like to do from real trials, there is no such thing as junk food. If for example using with flour not wholemeal classes something as 'junk' fine but then list ALL white bread as 'Junk'. Including home baked! Most of the line anti 'junk foods' is a snobby cooking attitude it seems to me. Their home processing being so much better than the commercial ones. So they think.
I love your honesty. Most of us simply want to manage our health. Getting clear unbiased information not influenced by current food fashion is sometimes hard.
IKR. Remember when they told us to switch to margarine from butter?
thank you for presenting some meticulously researched material. Unfortunately there is quite a bit of FUD going around against seed oils (well intentioned or not)
What an underrated channel. Gil is solely evidence that ordinary people cannot digest good quality content. :)
I fell for this too I think in large part this is about money like everything in capitalism I can tell you this a 32 oz tub of canola based mayonnaise made by Dukes is $5 the 24 oz tub of avocado mayonnaise that I bought at the health food store was $17 so I think maybe that really helps to understand where this frenzy is coming from the avocado mayonnaise is more than three times the price of the canola based mayonnaise and by the way it doesn't taste any better it's not as if the avocado mayonnaise has his amazing taste it's actually a little subpar just to the regular Duke's Mayonnaise so you have to be careful because if I'm a company and I want sell a product that is three times the price of my competitors you better damn well know I need to come up with some reason to scare people into buying my product and paying that premium price so the next time I need to buy mayonnaise I will go back to Duke's canola based mayonnaise now having watch this video
Fabulous episode. I wish there was some good information on cancer in relationship to seed oils . I have always heard that seed oils , especially when over cooked, are carcinogenic. In general, are there any other ways in which seed oils might be harmful?
Anything "overcooked"....read burned.... can be carvinogenic
thomas delauer needs to watch this , really limiting foods due to soybean oil
Paul saladino will have a stroke while watching this video
I wanted to add some info about heated fryer oils in the food industry based on my experience. When I was young I was a manager at a medium-sized fast food chain. We would fill the fryers with oil, and they would run at ~375F all day long, and we would change the oil every 2-3 days on average. I was later a manager at a grocery store with a hot food department, and had a similar experience - although we used the fryer less there so we only changed the oil on a weekly basis for the most part. Essentially, the more you fry, the quicker the oil starts to get filled with burnt sediment from the food. You can skim a lot of it out, but many particles are too small for the skimmer I guess, and eventually your oil begins to appear dark/dirty and can begin to affect the taste of the product, so you have to change it. I imagine at very well-run fast food franchises they have some very specific protocols, but where I worked, oil changes were based on a subjective assessment of the oil.
I've been in the industry myself, and I agree. I just wonder if the issue with inflammation isn't actually so much the oil, but the typical flour based batters that remain in the oil. With them being skimmed and broken down into such a small pieces maybe they uptake quicker into your system and that is where the inflammation is coming from. I don't know, I'm just a student of TH-cam U😄
@@cincin4515 A deep fryer being emptied after every use is comically ridiculous as an idea.
@@timtinsley1800 I am also wondering about how the oil changes chemically every time it is heated. There must be some kind of chemical breakdown/reaction that occurs each time the oil is heated. Are there any studies on that?
No protocols or ethics period
some just replace the oil as its used up. never actually replacing it completely.
Thank you so much for making these videos. It’s so valuable to have someone who understands the methods and how to interpret and validate the studies on health and nutrition. Honest and unbiased, this channel is an island of truth and usable information in a sea of misinformation, clickbait, and snake oil sales. Ah, you didn’t include a study which compares snake oil to seed oils 😂
I think it's a serious issue in the evidence base that very few studies were following the pattern of beginning their treatments by removing all "extracted" oils (i.e. not part of whole food sources) from the diet, and logging typical fat intake, cooking methodologies, frequency of eating out, etc, before the study. I am personally convinced wholly by the study which took its participants through a low-oil control diet first before putting them on the uncooked oil treatment. But on the topic of inflammation from e.g. cooked oils, surely we should do this as well! Cooking oils are essentially universal at this point, and deep fried food is everywhere as well. I highly doubt a capsule of deep-fried oil is going to make a significant difference in the inflammation levels of someone who was already eating KFC every evening for dinner.
I have a love for `chilli oil' as made in Chinese cuisines. Despite my love for the taste, I have noticed that if I plop three tablespoons on some noodles and eat it for breakfast, it makes me feel absolutely awful for several hours. I cannot ignore the incredible complexity of chemistry in generally high-temperature, multi-ingredient situations. Surely many byproducts of all these tasty-making reactions are also at least mildly unhealthy. I recall seeing some time ago that potato, when deep-fried, is an unusually unhealthy food, particularly in comparison to itself when steamed or boiled, due to the formation of `advanced glycation end-products'. I assume my chilli oil has a decent bit of those as well!
OR, maybe your body can't handle digesting 300 calories worth of fat in one meal (or it could be chili). Many people have trouble digesting fats. You would have to do a strict controlled trial making the chili sauce with various fats, testing those in one trial and then doing a comparison trial of plain oils with no other ingredients. Anecdotes are not evidence of anything.
I VE BEEN USING 100% COLD PRESSSED OLIVE OIL. from : California olive oil. i take 60 ml every morning .
Regarding food for a healthy young person most things work. But long term 30 to 60 years shows a different picture.
Do the studies say anything about the source of the oils? For example - brand, organic, GMO, cold-pressed, method of extraction, etc? Could those details cause a significant variance in results that were obtained in people?
GMO is not bad
Instead of inflammatory markers, I'd like to see studies that test effects of these oils on cardio-vascular health.
hi, we covered that here: th-cam.com/video/_VwDZVbfrKo/w-d-xo.html
Thanks for a great video. There is so much BS on the internet. It's amazing just how emotional people get over seed oil.
Alright, here is a question. If they did a study and gave cigarettes to a number of people and compared it to those that don't smoke to see if cigarettes leads to cancer, will they find an increase in cancer after 4 months? Especially if you get them to smoke only a quarter of a cigarette per day? most of these studies are only a few months long and ask the participants to take a table spoon each day.
see the section named "time"
How dare you use facts, education, and peer-reviewed publications to reach a conclusion. This is the Internet, Dammit!!! I won’t stand for it.
Your videos are getting better and better Gil. Well-structured and easy to understand. Thank you for making the content.
What about a video on what exactly makes junk food so unhealthy? Is it the sugar? The white flour? The fat? The combination and in whatlevels? The lack of fibre? The high calories?
Exactly. FIND THE MECHANISM. That’s science. Not “moderation of everything and anything that can be shoved down your windpipe without immediate toxicity.”
In my opinion it is mainly the gmo grains used and how it is processed
Just wanted to pop in and say thanks for the videos you’ve made and are making. It can sometimes be hard to discern truth from fiction especially when many of us don’t have a background in a medical field. 10/10
my health, not to mention my mental health decreases due to the conflicting messages I get from all the differing dietary "guidelines". lol, having said that, I appreciate this channel. This guy should be invited by Joe Rogan on to his podcast to stir around Joe's brain cells as much as mine, because I know Rogan is not a fan of seed oils
How about a review of all the other effects different oils have and which ones promote optimal health and which ones don't.
Is “not significant change” means there was some change in the inflammation markers but researchers used that sentence instead showing exactly the difference that it made.
Hi Gil,
How does this fit in to the argument of high O6:O3 ratio negatively impacting cardiovascular health or even atherogenic?
What if CRP is not the correct measurement or marker?
Pharmacist with a masters in clinical nutrition here, you put out absolutely amazing content!
thank you sir!