Why Fructose causes insulin resistance | Insulin Resistance | Jason Fung
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- เผยแพร่เมื่อ 15 มิ.ย. 2024
- Why Fructose causes insulin resistance | Insulin Resistance | Jason Fung
🔥 Unraveling the Link: Fructose and Insulin Resistance 🕵️♀️
In our latest video, we delve deep into the complex relationship between fructose and insulin resistance, covering key aspects:
1. 💡 Insulin Resistance: Understanding this critical metabolic condition and its implications for health.
2. 🍞Carbohydrates: How carbohydrates, including fructose, affect insulin resistance.
3. 🍭Table Sugar: Discover the hidden fructose in common table sugar and its impact on metabolism.
4. 🌾Where Fructose Can Be Found:Explore the numerous sources of fructose in our diets.
5. ❓Why is Fructose So Bad: Uncover the reasons behind fructose's harmful effects on insulin sensitivity.
6. 🔄Fructose Metabolism: A comprehensive look at how the body processes fructose and its role in insulin resistance.
7. ⚙️How Fructose Causes Insulin Resistance: The intricate mechanisms by which fructose can lead to insulin resistance.
Join us as we unravel the science behind fructose-induced insulin resistance and its broader implications for health. Hit the like button 👍, subscribe for more informative content, and ring the notification bell 🔔 to stay in the know!
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▶️ Timestamps / Chapters
0:00 Intro
0:18 Types of sugars
0:37 What is carbohydrates?
1:23 What is sucrose(Table sugar)?
1:50 where fructose can be found?
2:37 Why is fructose so bad?
5:53 Fructose Metabolism
7:24 How fructose causes insulin resistance?
9:15 Outro
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#WhyFructoseCausesInsulinResistance #InsulinResistance #JasonFung #InsulinResistanceDiet #Insulin
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What causes Insulin Resistance?- th-cam.com/video/CRzPdhO6HOM/w-d-xo.html
Consuming high amounts of Omega-6 fatty acids causes damage to the Insulin receptors.
I believe this to be the primary cause.
I have read that Americans today consume nearly 30 times as much Omega-6 fatty acids than Omega-3 fatty acids found in fish. The ideal ratio is 1:1 for Omega 6 and Omega-3.
Once the Insulin receptors are damaged, sugar accumulates in the blood and increases the Insulin levels.
Along with tests for Fasting Glucose level, it would be a good idea to test for Fasting Insulin.
Then we can get an assessment of Insulin Resistance using the HOMA-IR calculator.
My HOMA-IR is 2.0 which indicates mild insulin resistance.
My HbA1c however is a perfect 5.0% because I eat no table sugar whatsoever. Only 1 tsp of forest honey with powdered black seeds. I also walk 3 miles every dat.
An older blood test from 15 years ago shows an HbA1c of 6.9% but I was never treated for diabetes.
Conclusion is that I am mildly diabetic, but I have good control over it through diet and exercise.
Exercise alone can open alternate pathways to push glucose into the cells without the need for insulin.
If I had not ordered the fasting Insulin Test, I would not know that I had Insulin Resistance, even though my numbers were perfect. I do intermittent fasting of nearly 18 hrs.
I take high quality vitamins and trace minerals.
Especially Vitamin B Complex, Inositol and Choline which really were critical for me as I am mostly vegetarian, except for the two eggs for breakfast. The boost in energy levels were almost instantaneous, and the brain fog was gone.
Taking Cod liver oil and Krill oil has raised my Omega 3 Index to more than 11%.
One needs to get at least 1gram total in EPA plus DHA.
All of the above will also reduce inflammation.
HDL.70. Triglycerides are 50.
Fructose in HFCS may also be factor, although not in my particular case, because I didn't care for soft drinks.
I have weighed as high as 245 lb. nearly 20 years ago. Now my weight is steady between 140-145lb. and I pay no attention to it whatsoever.
Saturated fat consumption, obesity, disturbed circadian rhythm are a few contributors.
Not all fructose is created equal. Fructose in whole, low glycemic load fruits reduce the risk of diabetes because of fiber. " Our findings suggest the presence of heterogeneity in the associations between individual fruit consumption and risk of type 2 diabetes. Greater consumption of specific whole fruits, particularly blueberries, grapes, and apples, is significantly associated with a lower risk of type 2 diabetes, whereas greater consumption of fruit juice is associated with a higher risk." Of course, soft drinks, not good.
@@lizhall2961
What has happened in the past 50 years in America and now elsewhere is the use of High Fructose Corn Syrup, which is a definite NO-NO. Fruits in moderation have always been considered healthy.
HFCS can be a contributor to elevated levels of Uric Acid.
Fructose causes insulin resistance? That's the first I've heard this. My mother is on insulin and it's quite effective keeping blood sugar down even though she eats plenty of fruit.
Yassss!!! This is tried and true!!! As a nurse working at an integrative office, we literally Prescribe intermittent fasting and keto/low-carb nutrition for ALL patients. We educate on "hidden" sugars as well as individualize plans based on food sensitivities thru testing. We balance hormines, thyroid, and vitamin deficiencies.....primary doctors hate us when we get their patients off all blood pressure and cholesterol meds. Even anxiety/depression meds go away sometimes because symptoms that manifested in depressiom/anxiety were merely an imbalance of some sort and lifestyle related. We reverse type.2 diabetes daily. I loooooove it and I love Dr. Jason Fung and his work, among many other keto/carnivore/IF youtube / healthcare professionals.... thanks for all your contribution and sharing with the world.
I am yet to run into a primary care doctor that hates to see their patients getting better. I might buy it if you say big pharma, since you're going after their pocket book.
@@mahed5807 I have had a primary doctor calling us irrate why weve taken their patient off all their meds...well, weve managed to get them to lose weight for the first time in 10 years and reversed their type 2 diabetes. Also, their cholesterol is now in check. And they dont feel depressed anymore. Primary doctors also fight with us when we write orders for certain lab work, they don't find it "medically necessary" to check for simple things like vitamin d or run a full thyroid panel.
@@healthcoachnursingnessa I believe it, Nessa. Even when I was at my heaviest and unhealthiest in my early 50ś and had just had a heart attack, not one doctor ever mentioned making any dietary or lifestyle changes. Not my family doctor, nor any of the cardiologists I dealt with. It was all about the medication. Even when I developed Type 2 diabetes shortly after (part of the cause was my ill health and part was from a strong tranquilizer I took that can cause massive weight gain and diabetes--quetiapine) not a single peep about losing weight, or anything but more pills. Thankfully, it was the diabetes diagnosis that pushed me to start looking at ways to avoid taking yet another medication and that´s when I read Protein Power by Michael and Mary Dan Edes and I started low carb, then very low carb, then the carnivore diet. I´m so grateful to people like you and your clinic and all the low carb advocates I´ve encountered along the way. ❤
@@mahed5807 I can believe that primary care physicians hate when their patients improve under an integrative approach. It makes the primary docs feel inept; they feel they don't have access to tools such as low-carb nutrition (or they simply don't understand the science of it); they are required to follow a "standard of care" which makes their patients sicker, or risk losing their license; their whole operating plan is rife with cognitive dissonance, as they write the prescriptions that are supposed to make their patients healthier, and instead their patients become more ill; and to top it off these docs got themselves tens or hundreds of thousands of dollars in student debt to put themselves into practice. No wonder they're bitter after making the ethically questionable life choice to promote mainstream medicine.
@HealthCoachNursing can you please tell me how you balance hormones and thyroid? Thank you
I have done 16/8 fasting for 5 months. Have lost 15 lbs (185-170) and my blood sugar is now in the normal range instead of pre diabetic. I no longer miss breakfast at all. Have also reduced the amount of carbohydrates that I eat at lunch and dinner. I no longer worry about becoming diabetic.
How many grams of carbs per day?
I never miss breakfast and lunch... but substituted light snack, fruit and tea or turmeric milk for dinner.
Feel good and hope my Type 2 diabetics reversal has started.
You are doing something wrong. I cut carbs & lost 80 pounds in 5 months. I bet you still eat pasta, bread, deadly grains, & likely drink soda.
@@SanjayGupta-nt9vn any snack is worse than breakfast.
Better you full skip breakfast
Did you eat sugar?
Dr Fung is my hero. I have diabetes. He makes it so simple. I tell everybody I know about doctor Fung. Even the hygienist who cleans my teeth at the dentist. She said I did a great job flossing. I said I don’t floss much, my gums are better because I don’t eat sugar.
You should try the carnivore diet and fasting..
Do carnivore and youll be surprised.
as a test you go to many dentists and they purposely won't clean your teeth without doing x rays and then they make up something, from cavities to gum disease and they tell you , you don't floss well, your dentist that you regularly go to already knows you, there is no reason to play the money game. I had this done a few weeks ago , I left the dentist pissed off, with no cleaning. They specialize in crowns, so they wanted to give me two crowns, they made up I had a cavity and the other crown was just in case, it looks like it can help. I had other dentists tell me I had 6 cavities, and my mouth looked horrible, I walked out to another one who I usually go to and said, no cavities but got me with a mouth guard. Sad when this industry is so crooked. If I was the only won, it would be nice.
@@MrFernanrc I empathize with you on the over-billing. My dentist keeps telling me I need some kind of gum surgery because my gums receded. First I was told this was about four years ago. Did not have any gum surgery. I don't notice any problem. Carnivore is taking care of me.
Fasting chafed my life. And I’m doing keto and was 192 pounds to 140 and been doing it for over a year and kept it off and had stage 3 kidney disease and reversed it and had 9 kidney stones removed and gout and now I’m still at 140 and no more kidney stones and my kidney disease is at a stage 1. Fasting and healthy keto changed my life. I now am going to school to be a nurse to help people with my knowledge and share my story and hope to help others. And I only drink water and electrolytes! I also do prolonged fasting/ intermittent fasting as well and I do omad. I do 18/20 hour fast. I feel great less inflammation, my blood pressure is great and I work out 4 times of light excerise. I highly recommend this lifestyle change!
Get that Uric Acid under control if it's still elevated. Levels over 5.5 will Trigger a response where glucose in converted into Fructose [it's an ancient response to winter months coming... it helps PRODUCE FAT & STORE FAT for winter]...the same trigger prepares some animals for hibernation. Makes you really HUNGRY...THEN STORES ALL THE CALORIES AS FAT.
How u did this Plz
FASTING@@arinascraft12345
I just want you to know Dr.Fung, that your information has changed my life! I have shed 21.5lbs in 5 weeks and I will never look at food the same way again. Thank you, thank you, thank you!
How did you lose it? Please guide. I need help.
@@thetree7694 remove carbs such as rice, sugar, wheat and fruits from your diet.
@@narendra1867 that's right...and NO snacks
@@thetree7694I listened to Dr. Jason Fung and took his advice!
@@thetree7694 Read the Obesity Code! It changed everything I thought I knew about food. Also Metabolically by Robert Lustig or his TH-cam videos. Also life changing. I was pre-metabolic syndrome. I lost 30 lbs. and don’t ever count calories.
You can almost pinpoint the decade when the obesity and Type 2 epidemic began in the US. One man at Coca-cola decided they'd change the formula to use HFCS instead of granulated sugar to save money. It was the beginning of my journey toward obesity and insulin resistance.
How are you doing now though? Have you reversed it successfully?
But you drank the stuff. No one forced you! You could have passed.
@@alexmorgan3435 I think the point being made is that nobody knew it was that unhealthy back then. It was reasonable to assume that it wouldn't be great for you but no one knew how damaging it was at the time. Those who knew didn't let on and as a result a lot of harm was done.
New Coke was scam to get you to adopt HFCS with open arms.
@@alexmorgan3435 You missed the point, Alex.
Never in my life heard such a nice snd clear concept of difference between glucose snd ftuctose. Tons of thanks sir.
The information I gleaned from Dr. Fung's first two books changed my life. Thank You!!!!!
As a Custodian (Janitor) it is perfectly clear to me to avoid any added sugar and avoid fructose like the plague - it is very sad that the nutrition break garbage I collect twice a day is full of sugery products on a rare occasion I may see an apple with only one bite mark. I am reading both his books and I highly recommend them
Now I see the vending machines are there but filled with 'healthy' foods. Juice and 'healthy' granola. Same garbage with a healthy themed packaging.
@@LTPottenger omg, 100% accurate
I totally agree! I am a school bus driver so I don't see a lot of what the kiddos get fed EXCEPT during Covid when schools were closed we drove lunches to low income kids who rely on school food to survive. I was SHOCKED by the crap they were feeding them. Sugar in EVERYTHING (probably HFCS, but I didn't check that). The yogurt even was full of fruit and sugar, granola, white bread sandwiches with processed meat & cheese, chips, cookies and snack cakes for dessert and either grapes, a banana or apple (rarely a whole one...usually presliced and packaged which I assume required preservatives) or raisins. Even when they tossed in a small baggie of "healthy" sunflower seeds they were honey-roasted and salted. AND only skim or 2% milk...never whole milk. No wonder obesity and T2 diabetes is becoming so prevalent in our children.
Good for you! You are an intelligent man who is working below his potential. I hope this is a temporary job.
To compare high fructose corn syrup and an apple is like comparing apples and oranges. 😂 No need to stay away from a red apple. However avoid pop and added sugars is great advice.
buy yourself a $15 blood sugar test kit and see for yourself easily
@@firstlast-pt5pp he said fructose doesn't register on glucose meter.
From what I have learned from your videos and tested myself. You are 100% right.
Gold!! Thank you Dr. Fung, sincerely you've been a life changing to me!!!
Thank you Dr. Fung, you explain everything so that the common man can comprehend; I love your videos.
Thank you Dr. Fung. Very informative about different sugars.
Awesome information thank you very much I have had Type 1 diabetes for over 20 years now and I’m now 51 yrs old & gaining weight really only visible in my belly area & for 49 yrs of my life I could always see my stomach muscles until 2 yrs ago so I’m going to correct the issue w/solid info like this 👍🏼
Dr. Fung is amazing i love what he talks about and hes such a good doctor
Thanks Dr.Fung.
Fruit was touted as being wonderful. Five a day and all that .
But it should only be eaten in season. Not all year round.
And whole fruit not canned or juiced or smoothied.
Also I dont think you can indulge in it until you lose the surplus pounds.
Happy Sunday.
That's pretty much it, in a nutshell, imo.
I had a green smoothie for dinner every night. The sweetener was always half a banana or coconut water. It was a complete meal and I lost 55 pounds in 9 months. Don't make blanket statements which are your opinion and try to pass them as facts without any studies to back them up.
That last part something I wish most people on TH-cam with channels would emphasize. Get your blood work together first then indulge every once in awhile by that time your relationship with food will have improved and you won't want to overdue it anymore🤠
@gauravipal9518 of course you lost weight considering you replaced what is typically the largest meal, dinner, with a single smoothie. Plus with the added sweetener being half of a single fruit or some coconut water.
It's like you completely misread the final part where they said "indulge", putting half a banana in your smoothie certainly isn't indulging.
That's just not true. Fruit can almost always be eaten fresh - canned fruits, processed fruits, juices - THESE are the bad sources of fructose because you lose all of the fiber that helps your body slowly manage digestion and absorption of the sugars.
Happy Sunday, Dr. Fung. Stay healthy 🤍😊😍
Insightful, interesting & well explained Jason; I learnt a lot. Thank you!
My other half insisted I watch this video because I am a Type 2 diabetic. Very interesting stuff, especially as I have always been told I need to worry about my belly fat. None of the medics involved in my State-sponsored neglect have ever mentioned that a fatty liver is actually more dangerous.
In passing, I love the way you are able to break down complex subjects in a way that, as a layman, I can understand without too much brain injury! Calm, measured and focussed explanations are as rare as hen's teeth in these modern days where everyone thinks they have to speak at impossible speeds to maximise the amount of content they deliver! I really appreciate a presentation that is delivered at a speed which matches the ability of my brain to absorb the new material!
Fortunately type 2 diabetes can be reversed; I hope you beat it.
Amen.
*Not too much sugar, calories, insulin or obesity, but fat causes type 2 diabetes:*
High-fat diets lead to intramyocellular lipids that cause insulin resistance: With high-carbohydrate, high-fat meals, not only sugar molecules but also fatty acids enter the bloodstream. The blood sugar level rises, insulin is produced by the beta cells of the pancreas and binds to insulin receptors in order to store the glucose in the muscle cells and thus lower the blood sugar level. In high-fat diets, instead of glucose molecules, fatty acids enter muscle and liver cells (intramyocellular lipids) and produce toxic degradation products and free radicals that impede the functioning of insulin pathways by clogging internal insulin receptors and inhibiting insulin receptor enzymes. The insulin produced by the pancreas then binds to the insulin receptors outside the cells, but nothing happens inside the cells. As a result, glucose accumulates in the blood and it takes much longer to lower blood sugar and insulin levels. If you also have a lot of belly fat, this belly fat is metabolically active and produces pro-inflammatory cytokines (interleukin-1, interleukin-6) which also interfere with the insulin receptors outside the cells. Besides that, fat and animal protein also cause beta cell death, and animal protein is responsible for the autoimmune reaction that completely destroys our beta cells.
Studies:
*Insulin Deficiency and Insulin Inefficiency*
It was first found in 1926 and 1927 that fat in the diet affects glucose tolerance, which is why blood glucose levels rise more and fall more slowly after high-fat meals.
*DIETARY FACTORS THAT INFLUENCE THE DEXTROSE TOLERANCE TEST*
1927: In the group with the high-fat diet, glucose intolerance skyrocketed. With the same amount of sugar water, they responded with blood glucose levels twice as high.
*Intramyocellular lipid concentrations are correlated with insulin sensitivity in humans: a 1H NMR spectroscopy study*
The mechanism of how fat causes insulin resistance wasn't known until MRI technology was invented to see what happens in muscles when fat is added to the bloodstream.
*Mechanism of free fatty acid-induced insulin resistance in humans*
Increased concentration of free fatty acids in plasma was found to cause insulin resistance by inhibiting glucose transport.
*Impaired mitochondrial activity in the insulin-resistant offspring of patients with type 2 diabetes*
Insulin resistance in skeletal muscle is associated with dysregulation of intramyocellular fatty acid metabolism. This increase in intramyocellular lipid content was most likely due to mitochondrial dysfunction. (mitochondrial dysfunction is also caused by fatty diets)
*Skeletal intramyocellular lipid metabolism and insulinresistance*
Lipids stored in skeletal muscle cells are referred to as intramyocellular lipids (IMCL). Disturbances associated with intramyocellular lipids and their causative factor, circulating free fatty acids in the bloodstream, lead to a toxic state and ultimately to insulin resistance in muscle tissue.
*Dietary fat acutely increases glucose concentrations and insulin requirements in patients with type 1 diabetes: implications for carbohydrate-based bolus dose calculation and intensive diabetes management* - Dietary fat acutely increases blood glucose concentrations and insulin requirements.
There is a video in which a doctor made himself diabetic in 6 hours by drinking oil and checking his blood on the monitor: *How to Get Diabetes in 6 Hours | Truth Of "Healthy" Oil - Dr. Nick Delgado*
Fructose isolate can have a few negative effects, but fruits, carbohydrates and even white sugar don't contain isolated fructose, as a result, they are metabolized differently. Of course, fruits and carbs are healthy, and carbohydrates help to reverse diabetes, that's why vegans have by far the lowest rates of diabetes. Vegans can get diabetes by using oils. Animal products are the main cause of all diseases. Dr. Fung spreads propaganda and misinformation. He has no idea what he is talking about. He has no idea about diabetes. He has no idea about the science of diabetes. Everything he says is the same that all other carnist doctors say, who only represent what the industries claim: Carnism video: *The Secret Reason We Eat Meat - Dr. Melanie Joy*
@@VeganDPsiiclox That is the single biggest crock of the sticky brown stuff I have yet read on TH-cam. And, for your information, Dr. Fung is not alone in his thinking. There are many, many specialists in the field who understand the benefits of a fats-based diet.
You need to tell my blood monitor it's lying when it reports high blood sugar levels after a carb heavy day. Obviously it isn't slave to the same political ideology as you and just simply reports on what it finds.
@@thomasm1964 Fat-based diets are scam. It's exactly as I said. If diabetics go on a low-fat diet (no animal products, no saturated fat, no oils) for a few weeks, their insulin resistance will go down, and so will their diabetes. This has been proven not only in science, but also in real people. I know a type 1 diabetic and she can confirm that everything from the studies is correct, because she has also tested it herself.
Studies:
*A Low-Fat Vegan Diet Improves Glycemic Control and Cardiovascular Risk Factors in a Randomized Clinical Trial in Individuals With Type 2 Diabetes* - Improvements in blood glucose and lipid control in type 2 diabetics were greater with a low-fat, high-carbohydrate vegan diet than with a diet based on American Diabetes Association guidelines.
*Vegetarian diets and incidence of diabetes in the Adventist Health Study-2* - The fewer animal products, the less type 2 diabetes.
*A low-fat vegan diet and a conventional diabetes diet in the treatment of type 2 diabetes: a randomized, controlled, 74-wk clinical trial* - The vegans had 31% less intramyocellular lipids in their muscle cells than the non-vegans.
*Veganism and its relationship with insulin resistance and intramycellular lipid* - 24 vegans vs. 25 omnivores (same gender, age, waist circumference, BMI, body fat, activity level, calorie count): Vegans ate 10% more carbohydrates, yet had lower fasting blood glucose, 30% significantly less intramyocellular lipids, lower systolic blood pressure. Their diet protected beta cells on the pancreas and cardiovascular system.
*Higher insulin sensitivity in vegans is not associated with higher mitochondrial density* - Vegans have better insulin sensitivity, less intramyaocellular lipids, lower fasting blood glucose, lower insulin levels and better glucose uptake in cells.
*High-carbohydrate, high-fiber diets for insulin-treated men with diabetes mellitus* - Diabetics were fed a high-carbohydrate, high-fiber diet with over 300 grams of carbohydrates and only 18 grams of fat (9% of their calories) per day. The daily insulin dose was lower in each of the 20 patients. Insulin therapy could be discontinued in 11 patients, of whom 9 patients previously had 15-20 units/day and 2 patients had 32 units/day. Fasting blood glucose levels and 3-hour postprandial blood glucose levels were lower in most patients, despite lower insulin doses. Serum cholesterol levels decreased from 206 mg/dl to 147 mg/dl.
*Regression of Diabetic Neuropathy with Total Vegetarian (Vegan) Diet* - On a low-fat, high-fiber, plant-based diet, 17 of the 21 patients with type 2 diabetes and systemic distal polyneuropathy experienced complete relief of sharp, burning pain in only 4 to 16 days. Numbness persisted but had improved significantly. The longer patients adhered to the plan, the more relief improved. By day 14, fasting blood glucose levels had decreased by 35% in the 11 patients. Insulin requirements had decreased in half of the patients. Five of them no longer required blood glucose-lowering agents. Weight loss, serum triglycerides and total cholesterol improved.
*Effect of rice diet on diabetes mellitus associated with vascular disease* - For the first time in the 1950s, the "Rice Diet" study showed that a plant-based, low-fat, high-carbohydrate diet could reverse diabetic retinopathy. 30% of patients who previously could not read headlines, for example, developed normal vision again. In comparison, our modern medicine can only slow down the progression of the disease, e.g. with medication or laser therapy.
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Diabetologists and doctors only learn nonsense about diabetes. They don't learn anything about the causes. They only learn which medications work best to relieve symptoms, same for Dr. Fung. There are also many, many specialists in the field who understand the benefits of a low-fat diet: Dr. John McDougall, Dr. Caldwell Esselstyn, Dr. Neal Barnard, Dr. Michael Klaper, Dr. Michael Greger (nutritionfacts), Dr. Walter Kempner, Dr. Dean Ornish, T. Colin Campbell, Nathan Pritikin, Dr. Alan Goldhamer, Dr. Garth Davis, Jeff Novick, Jeff Nelson (VegSource).
Good presentation but there is a risk in exaggerating the role of fructose compared to total carbohydrate - “carbohydrate” means sugars and starches. The poison is in the dose. Demonizing sugar has the danger of people, like the Harvard School of Public Health giving the impression that all those “healthy” carbs in vegetables are ok which is not true if you are trying to reduce carbohydrates. If you have diabetes, starch is probably worse than sugar - fructose does not stimulate insulin secretion. However, fructose alone (in the absence of dietary glucose) is not safe. We get very little fructose by itself in the diet. Different fruits have different ratios but roughly, fruits are about equal amounts of glucose, fructose and sucrose, or approximately equal amounts of glucose and fructose (since sucrose is 1:1 fructose and glucose). Good advice which I am sure Dr. Fung would agree with is the first plan of attack is to reduce total carbohydrate. In my view, the real risk of sugar is: 1) easy to over-consume, and 2) manufacturers put it in all kinds of things where it doesn’t belong.
Good day Dr.jason, nice to hear you again thank you sir
Thanks for the video, Jason Fung.
Thank you for all that you do:)
Hi, I recently saw your videos and started intermittent fasting, thank you very much for all these valuable information. My father has type 2 diabetes and I am encouraging him to follow your diet tips. Although I am fluent in English and follow your videos, unfortunately my father is not. There is no automatic translation of subtitles to Turkish. I would be more than happy if you can add Turkish language option to automatic translation to subtitles. I really want my father and all the Turkish diabetes patients to follow your precise and very motivational videos. 🙏🌸
Hi, if it helps, on the video description , at the bottom you will find the transcript. Select all the text then copy (ctrol C). then go to speechify, log in with your google account, then select to turkish. it will read it aloud for you,
Thank you Jason, always to the point!
Docteur Fung we need you also in West Africa in Côte d'Ivoire .
Your advice fit for our people who have no money.
Thank you Doctor Fung!
Finally I understand these confusing types of sugar
Fruit is good for you...
No "oses'" for me for almost 2 years now! 😀 I'm soooo much healthier and better for it. I've lost over 150 lbs, I'm off my blood pressure meds, my osteoarthritis pain is so much better and my asthma is gone. Don't miss it, don't need it, don't want it. " Fruits are overrated." I gave " fruit the boot" too. I'm loving my new life 😍. Thank you Dr Fung!🙏😊
Way to go Jessica! It’s hard for me to stop eating fruits completely but i think I am almost there after this video! 🙏🏻
@@yelenasms In general I don't think fruits need to be given up completely, but if that is your goal work towards eating only whole fruits especially berries and only local and in season.
Yebbut simply stating "no oses" for you is NOT the reason you ended up the size and weight of an apartment block is it? The reason you got so fat in the first place is because you ate all sorts of processed foods, high in sugar and carbs on an industrial scale and did no exercise!!! It was your ignorance and gluttony that made you morbidly obese. I do occasionally eat "oses" as you put it, but in moderation however I have never allowed myself to become obese. I have a simple piece of equipment that I use that straight away tells me if I have put on weight. It's called a mirror. I can also tell if my trousers become a little tight around my waist which means I have a couple of fasting days. I have even been known to use my scales from time to time to weigh myself. I just cannot understand how some one allows their weight to balloon by 150lbs/70kgs? I don't even weigh that!!!! I weigh only 145lbs / 66kg. Just can't get my head around people that can let themselves become so fat.
@@yelenasms It's funny how our tastes change. I was soooo addicted to sugar. I used to put it in everything. Now, I don't have any desire for it or really care about it at all. I'll take a steak over a cake any day!😀. Good luck to you and your goals 👍
@@alexmorgan3435 You are amazing! You should be so proud of yourself 😉. We are the same weight now! 😀👍. Only looking forward ⏩
Great information. Thanks you so much for sharing your knowledge with humanity ❤.
I appreciate and thank you Dr. Fung for all the information. 👌🌹♥️👍🌹🌹♥️♥️
Great video! Thanks.
I reversed my severe insulin resistance removing all refined sugar from my diet. Instead of refined sugar I ate fruit every night instead.
Jason, thanks for the info! Btw love the style today 👍
Great information 👍🏼❤️ much appreciated.
It is interesting to note that all fruit, even organic (unless wildcrafted) is hybridized.
so are the grains and the animals
True.
Thank you Doctor Fung, all this I formation is helping me so much. I'm trying to correct a horrible hormone imbalance that keeps my insuline high at all times, I'm determined to do a 40 day water fast . I am on my fourth day and I feel great :) Thank you so much for all you do:)
40 day water only fast?
A 40 day fast should only be done under a doctors supervision.
Isn’t there a difference between fructose found naturally in fruit and the fructose in high-fructose corn syrup? I thought the latter one was much worse.
God bless you, Norma. Cinnamon helps lower blood sugar. I take a supplement called D-Ribose that lowers blood sugar as well. I'm on prescription meds that can cause elevated blood sugar so I try to keep an eye out for different foods and supplements that naturally lower blood sugar. I realize that the sugar is not simply evaporating - that it's going into fat cells somewhere in my body - but it's coming out of my blood stream. Whatever is in these meds that cause elevated blood sugar and however they accomplish that is a problem but I continue to do my 16-hour fasts in an attempt to mitigate the problem.
@@vanessamichelleraven415 You are right..raw Fruits are full of vitamins and minerals..Corn syrup is synthetic
Thanks for all the info! Excellent video as always :)
Cool necklace btw!
Dr Jason Fung is an institution 👏
Thank you so much for your work and for your very easily accessible information!
Bs. Fruits are an awesome breakfast as long as you are active. I’ve been drinking fruit smoothies every morning for decades and my weight remains constant all year long.
It is fear mongering, uneducated, garbage that fruit causes insulin resistance! Natural sugars in fruit, as nature intended, are not the problem, but the refined sugars in ultra processed foods that is the real cause of insulin resistance.
This video is not about if you are active or not. It is strictly about scientific studies, research, and exactly what the difference between glucose and fructose.
Just as you say "as long as you are active", I can easily counter and say that most people, or at least Americans since that's where I'm from, are not active so this information will be especially important for them.
Lastly and hopefully, you make your own fruit smoothies with no added table/processed sugar. Smoothies bought from restaurants usually have alot of added sugar.
The thing with fruits is that the dose of fructose would be low enough...if there were just some fruits. But how many people only eat fruits without adding a multitude of other sugars on top? Sugary cereals, sodas, chocolate etc, it quickly becomes too much for the liver to process comfortably.
I agree. He seems to be demonizing fruits the way eggs were decades ago. It's not the fruits alone, but the fact that many supplement it with these processed HFCS, refined car carbs, and UPF @@Leonhart_93
Agreed. Fruits are not only fine, but very healthy. People just need to avoid processed foods with added sugars.
However, there is no comparison between eating whole fruit, with ingesting isolated compounds of fructose! The body metabolises those completely differently.
It doesn't, fiber doesn't matter for fructose
Fruit sugars are healing. I have been on 100% raw fruit for 5.5 years. I cured psoriasis and arthritis. I body build too. This guy does not understand the human lymphatic system, its real function and purpose.
@@Insp.CountMortisWinshipKlawHow many pounds of fruit do you eat every day?
@@markaguilera493 😅 always a smart ass somewhere
exactly HFCS comes from Corn, another grain
Hey how’s it going? Love your videos and the content they provide others. Truly life saving stuff.
One of your videos you reference calories in and calories out regardless of fasting.
I’m another video you reference the body not being able to tell exactly how many calories you take in. So you said to just eat until you’re full then fast.
Can you shed more light on that specifically because it sounds a little contradicting but maybe I’m not taking in the information correctly.
Thank you for the information
This is fabulous presentation, However, fruits have a lot of nutrients ingredients like minerals, vitamins and fibers which are very crucial to our body. So if we think only fructose in a negative way , I don't think we can achieve our healthy and longevity. What I advise here we should eat the best quantity of foods.Also doctor could you provide information of eating food in relation to the dosage as a body needs.
I appreciate your service.
Fruits have crucial nutrients, but these nutrients can be obtained without the damaging effects of fructose, from other foods such as meat... except fiber, which may not be crucial after all.
@@victorycall fibers are so vital nutrient in our body which are substrates of microbiota to form short-chain Fat Acids(SCFA), also help to reduce colorectal cancer by preventing the formation of TMAO as the risk factor for atherosclerosis. Also fiber useful for nourishing epithelial tissue, preventing constipation and so on.
Healthy eating is a complex phenomenon, so we need think more and more...
The fibre also helps slow insulin spikes so I have no problem with fruit
@@victorycallAn apple a day keeps the doctor away.
I wonder if kiwi fruit is okay to eat since it’s low in sugar?
Yes when GI tables first came out I thought ' great fructose has a zero score - a solution for the. sweet tooth problem ' . Sadly not the case . Fructose metabolism is obviously an evolutionary adaptation to allow us to gorge on fruit in autumn prior to hibernation or winter austerity .
makes so much sense!
Dr. Fung thank you for this explanation.
*soo, Wut is Fung saying???? I can't Eat Oranges?????*
*I Know that NONE of these NarcistAssHoLes wiLL Ever RePLy!!!*
Really love your work, keep spreading the truth about how the body works, ill be eager to buy any new books!
Great explanation of a very confusing subject.
In 1986, as part of my healthy bodybuilding regime, I switched from table sugar to pure fructose because it was deemed as a more healthy alternative to sucrose, given that it was derived naturally from fruit. I paid three times as much for fructose powder, all because Muscle and Fitness magazine said so.
Yeah, I was in the army based in Germany. Everytime I went home to the UK I used to go to this camping shop in London and bought several jars of the stuff to take back to Germany.
It was popular for a while with advanced bodybuilders using it in combination with insulin to help build lots of muscle mass. However it has fallen out of favor as straight dextrose seems to work just as well and is a bit cheaper and gets into the system faster. I've used both and I must say I find fructose too sweet and dextrose I agree is much better.
I remember the bodybuilding advice back then was you can eat as many carbs as you want as long as you limit fat intake. There was a huge bodybuilder back in that era who claimed he ate 10,000 calories a day mostly in the form of rice. I think his name was Victor Richards, if I remember correctly.
🍒🍊 I remember those days. "Follow the science." We did , and we lose. 🙄
The “Hass” diet (late 1980’s) named for Dr. Hass touted the use of fructose as better than sugar. It was a high carb diet that Martina Narvatarlova, the tennis star, endorsed. And to think my husband and I sacrificed to be able to afford fructose in our tight budget.
Fascinating! Thank you!
Very interesting .thankyou .
Good to know .
I have a friend who measured her blood sugar level 2 hours after eating mangoes and insisted that the readings were normal and hence mangoes were safe for diabetics 😂😢😅 . You have cleared the popular misconception that fructose is safe as it doesn’t raise blood sugar levels. Extremely important information doctor. Request you to talk about this more and more to clear the misconception in people.
Every fruits are perfectly safe for diabetics just check out the science
That said, it's really ok to eat fruit once in a while. Yes....yes it is. You can't get stupid with it and eat a ton of it every day but it's also ok to eat it once in a while. I actually just ate a mango last night.
Love mangoes , but do not eat one myself. I share one always with my husband and son.
If you eat a whole food plant based diet all fruits are find for diabetics. Whole fruits and vegetables help with insulin resistance so mangoes or bananas are actually great for diabetics
There's big difference between pure fructose & those that contain in fruits, fruits are rich in fibers that absorb any sugar & also have micronutriens that benefit for health
Such a clear presentation, thank you Dr Fung. In fact, it explains how ancestrally. eating fruit when mature on the trees, really did help to fatten us up for the winter when food would have been more scarce. Trouble is, now it's available all year round and just compounds the problem of insulin resistance.
And genetically modified to be bigger and sweeter than in the original form.
Yes! Exactly!
Yes! You’re right! 👍😊
Exactly right - fat storage is a survival mechanism.
I recently went on a 15 day water only fast, so my body was burning its own stored fat/energy which also has water built in.
When people talk about everything in moderation, ask them when was the last time they went a week without food.
@@matth6299 How was it?
Very good well said brother
Thx u Dr Fung. Love all your videos. You have changed my life. Everyone should have to listen to u!
I drink 2 fruit smoothie a day for years never felt so good. Energy levels are out the roof and just jump out of bed in the morning.
Good idea to measure the rise in blood sugar an hour and 2 hours after your fruit smoothie. Nothing spiked my blood sugar more than eating fruit ! 🍎
What’s from natural sources does not equal something that is good for you.
Thanks for the clarity on this topic doc
Especially today when we can have this stuff in abundance.
@@tserevenad I’m ketovore mostly and my taste for sweet things has faded away. I do however keep my options open so that on special occasions, I give myself permission to indulge😊
Hemlock, foxglove, poison ivy, datura are all natural but not recommended.
@@lenabreijer1311 💯
Thank You God Bless!
Great video!
This is an eye opener but is a little confusing.
I was under the impression that fruits are healthy carbohydrates but still one has to watch the portions and take fruits with low glycemic index. ( limited portions of fruits such as blueberries , strawberries , apples, oranges and guava).I thought they were more healthy carbohydrates than rice or wheat.( considering that they are natual carbohydrates and not processed at all).
Dr.Jason Fung, you are an authority on managing diabetes with proper diet.
It will be very helpful to me if you can throw light on what fruits and what quantity can be safely consumed by diabetics.
I will be grateful for your reply.
I live in India and would love to have online consultation with you, Dr Jason Fung.
Regards
Sundar R
glucose isn't nutrition, protein and fat are nutrition.
As someone who suffers from Hyperinsulimia I have to say eating whole foods and complex carbohydrates and limiting my saturated fats has been a game changer. I eat 4 servings of fruit a day and also eat plenty of legumes, sweet potatoes...etc. Since following Doctor Mike and Layne Norton I've seen my fasted insulin drop over the year. We're all different and react differently to foods. The difference between medicine and poison is dosage.
there is a theory that fat in the diet is what cuases insulin issues
Thank you Dr. Fung
Que informacion tan inteeresante !!; ojala pudiera tener subtitulos en espanol
I watched this video while eating a nectarine. No doubt high amounts of fructose are unhealthy but Dr. Fung does not provide specifics. There is around 5 to 6 grams of fructose in a nectarine. 100 grams or more is a lot. So I would not cut out fruit completely. Given the nutrition and fiber I would say that is healthy to eat some fruit here and there. Just avoid extremes - in either direction.
Agreed! Fruit has decent water content too. I believe moderate amounts are great for health.
I am not diabetic or even pre- however I have adopted a WOE focusing on overall reduction of glucose/insulin swings so seems fruit, as I do, be greatly restricted regardless of your health status.
glucose is basically essential for energy production, our body can't work without.
and insulin is meant to be produced to initialize the energy production/store process.
@@moklbz have you researched gluconeogenesis?
@@tserevenad yes I did, that's why I said glucose is important even if you don;t take it, your body make it.
Avocado is the ONLY fruit I eat, besides a few berries now and then!!😉😎
I think that is my problem thanks Dr Fung
This video is so timely because I just started adding some blueberries into my low carb diet because they didn't raise someone's blood glucose on another TH-cam video.
I mean yeah okay fructose is worse, but studies look at juice and "sugar sweetened beverages". This says it all. How much fructose is contained in a single fruit ? Probably much less than within a glass of juice or similar beverages. Not talking about vitamins, fibers and so on.
This is exhausting. Every food kills us. I bet we are wrong about some food group right now that will turn out to be bad for us in future research.
Nope lmao. Eat like hunter gatherer and you'll be fine. Agriculture destroys the env. Eat your venison and beef and you'll be just fine
This avant garde thinker is a rock star!!!!!!!
I just got blasted last week in comments on another channel for explaining this to someone. The thread was about insulin resistance and T2D and she was boasting that she had it all figured out. She said she avoided all other sugar and was careful to watch that intake, but that since fruit was so healthy with all the vitamins, etc, she never limited her intake of fruit and, even worse, fruit juice. And this was in the context of giving advice to someone newly diagnosed with T2D and who had a significant amount of weight to lose! And after declaring that it was impossible to reverse T2D. I politely explained to her how fructose is broken down in the body, and the high points of the info in this video and she went ballistic. Evidently, she has little understanding of how the body works and even less interest in finding out. Ordinarily I’m okay with someone choosing to be stubbornly stupid because I hope they secretly look it up later and see the truth. But she was giving all of this incorrect information designed to keep the poor woman she was advising fat and sick. I know it’s not her fault - she probably got her info from the ADA. But I did point the woman seeking info to this channel and recommended the books The Diabetes Code, Diabetes Type 2 Healing Code, and The Obesity Code. This video was just in time for her!
Good job people just don't do there research. 😌
Such a compassionate and caring outlook for all parties. Amazing job.
I quit sugar and wheat products for about 8 months and I lost 52 lbs and successfully reversed my pre diabetes condition. There is no doubt that sugar or excessive carbs consumption is the key to numerous health conditions and hormonal imbalances.
Quit carbs, live healthy.
@@mirzamanmirzaman1482 I had
I have severe rheumatoid arthritis psoriasis and I have osteoarthritis I quit all sugar products and eat mainly meat and a few veg and my rheumatoid Factor ain't even showing up now and I'm off all meds so I know it works
I love you from the bottom of my heart, Dr Fung. Your books and advice cured my obseity and my mom's as well. But for the love of God, what is this haircut? 😅
Thanks for everything you do! Much love from Brazil
As someone with HFI I see this as an absolute win
❤thanks dr Funk🙏
I wonder how many who complained of health problems actually ate fruits in season, sweet potatoes, boiled potatoes, lots of green veggies, some fish, less meat and no fried oil or butter.
Sooooo sick of how as humans we have distorted food and its consumption to the point where we have to be taught to not eat this or that. It seems it is a distant fantasy to be able to just eat what is ideal for your body without weighing, counting, avoiding, craving, gaining weight, etc. Not one single animal in the wild has to deal with this nonsense.
Not a single animal creates processed food. Animals, not domesticated, eat what is in season, including bears which gorge on berries in the fall in order to get fat.
Animals in the wild move more than they think. I think more than I move.
It’s not a fantasy. The problem is we’re surrounded by so much crap disguised as food.
@@thespear4083 the Egyptians had problems with obesity too. Surrounded by all natural dates, wheat, barley.....
@@lenabreijer1311 dates are high in sugar and we aren’t supposed to be eating wheat and barley.
NICE, DR, FUNG!!! Glad you're improving the quality of your videos! Kudos! :D
Thanks Doc. Good to know .... 😀
That why they call it natures candy. You can see the downside in places where acess to fruit all year: carribean,hawaii.
I've been on 16:8 (initially 18:6) for about 7 months and i have lost 10kgs. The thing I love about this diet is that it doesn't feel like I am on a diet. It just feels natural. I use to hate eating greens but now my body craves Salads and greens. I dont know if this is due to IF or something else. I also eat a lot more fruit to counter any sugar cravings. Finally after the initial couple of weeks, IF becomes very easy. You dont feels the hunger in the same way. I mean you feel it but it doesnt stop you from focussing on your normal life. I found Dr Fungs videos very helpful in my IF journey.
Lies. No one craves greens. They are full of plant toxins and plant defense chemicals. Also fruit isn’t good either
Stop eating fruit now.
How can you eat a lot of fruits since it's fructose, the very thing this video is against? !!
The Chinese guy said fructose is bad so be careful with all that fruit you're eating. It'll make your liver a butter ball
@@haveabeer123 Some people skip fruit for the reason of sugar and some doctors suggest skipping it for fructose reason.
Thanks Dr Fung for another great video!
So, what is the guideline regarding _eating_ fruits to avoid the conversion into fat and triglycerides? Could I eat a piece of fruit daily? Should it be taken well away from meals?
One would say that zero grams of fructose per day is ideal for loosing weight and for health, but it happens that almost every vegetable green has a little bit of free fructose and some sucrose -which has 50% fructose in it-. So, what's the maximum amount of fructose that could be considered healthy? In my current natural plant-based diet, 2100 calories per day, eating only vegetable greens, organic eggs, salt and some spices, some tubbers like potatoes, and with little to no meat or fruits, my daily intake is almost always above 15 grams and below 25 g of total fructose (free fructose plus fructose in sucrose) per day. In case this information is useful to anyone. Cheers.
Do you recommend a maximum amount of fructose grams from fruit sources per day? I often choose fruits as my main daily source of CHO.
The latest research suggests that a limit per meal is more important than a limit per day. Why? Because small amounts of fructose are converted almost completely into Glucose by the small intestine. So up to about 3 g of fructose (or 6 g of table suger) per meal seems to have no signifcant negative impact on health (Jang et al, 2018, doi: 10.1016/j.cmet.2017.12.016)
Greetings, Dr Jason!
Will my bp meds break my intermittent fast?
We take bp meds at 9 pm but, our IF started 3 hours earlier at 6pm.
Will await your reply.
Thanx much
How can we source the glucose and how much and how often for the blood glucose levels and glycogen levels that are optimize health? Ideally, avoiding fructose.
Fruit is not your best friend....It took me a long time to realize what it was doing to me healthwise. Thanks Dr. Fung for your work.
What was it doing?
I cannot imagine not having the nutrients of what fruit provides.
Fructose is metabolis poison. Modern fruit has been designed for high sucrose levels. Any polyphenol benefits are offset by the sucrose poison. Berries are best in moderation.
Fruit is not your enemy
Bullshit.
I have been a type 1 diabetic since 1970 and I vividly remember going through a time of using fructose instead of artificial sweeteners! I made ice cream with fructose instead of sucrose.
Fortunately I gave this up in a few months. I’m not sure why. It’s just as well.
The recent popularity of agave syrup (often 80% fructose) really puzzles me. It’s hyped as being healthful, and sold as an ingredient for homemade cocktails! A double threat for the liver: alcohol and fructose at the same time!
So true
Thanks
For fructose intoleranse,
avoid foods containing:
Fructose
High-fructose corn syrup
Honey (sorry!)
Agave syrup
Invert sugar
Maple-flavored syrup
Molasses
Palm or coconut sugar
Sorghum
It causes intestinal pain for me. And I didn’t know this until I looked it up Fructose. No more regular pop for me.
Diet sodapop can be just as bad, or worse. Artificial sweeteners can spike insulin and they are excitotoxins that cause neurological damage. And natural sweeteners, the "tols" can cause intestinal distress for some people. E.g. xylitol, sorbitol. And of course, the fructose in fruit juice can contribute to fatty liver disease and metabolic syndrome. If possible, the best choice is to get out of the habit of drinking sweet beverages.
I wish that I had known about this. I, too, believed that since fruit is natural it’s healthier. I could eat a whole melon or 2 apples a day n a pound of cherries in 1 sitting. I love fruit and it’s been a little difficult giving it up, but I eat it so infrequently now. I could never figure out why my A1C wasn’t getting any better because I was eating ‘healthy’ food.
Ikr...
My sister is Vegan and she always has alot of fruit, smoothie bowls, "nice cream" and different little "treats" made with fruits & stuff. She's always telling me that "It's so healthy for you cuz it's whole foods that are so calorie dense!" 🙄
@@tinabenson1492 it’s is healthy and I bet she is skinny and trimmed . As long as u don’t increase fat more than 10g a day u are good !
@@anir8023 HA. Most vegans look like crap and make no sense because of brain fog.
@@tinabenson1492 - Make her liver with onion 😉👌
@@anir8023 Not always the case. TOFI's get diabetes. (thin on the outside, fat on the inside, specifically in the liver, is one of the new theories) / Dr Taylor / Newcastle studies.
I've read yesterday a paper about weight loss and high quantity fruit intake, and there was a loss in body fat and liver fat.
Hi Dr Fung, very intersting video but leads me to the question. Is it ok to eat glucose as a sweetner?
*soo, Wut is Fung saying???? I can't Eat Oranges?????*
*I Know that NONE of these NarcistAssHoLes wiLL Ever RePLy!!!*
I don't understand how fruit and soda can both be equally bad for you? Top foods high in fructose are sodas, fast food burger, salad dressing, sweetened fruit yogurt, apple pie, dried fruit, and honey. There has to be a difference between these processed foods and fruit.
Your body doesn’t know the difference
I agree. I've never seen anybody get fat eating bananas or oranges. If you only eat protein and vegetables your always tired. I've done it and it sucks.
@@Happydays1984
It's possible for someone to be skinny with a fatty liver & not know it until some health issues arises.
@@Happydays1984 Eating animal protein and some vegetables will only make someone tired if they´re eating low fat. It´s the fat or glucose in the diet that gives us energy. Either you´re a fat burner for energy or a glucose burner for energy. If you eat a lot of glucose in fruits, vegetables, grains, starches, you will be a glucose burner and your energy levels with fluctuate throughout the day, but if you eat very low or zero carb, you are a fat burner and if you eat enough healthy fat, you will have steady energy throughout the day..
Look up Dr Robert Lustig to learn even more about this.
Love fasting .. but not going to lie, this is heartbreaking 💔 for me! I love fruits, specially berries and cherries 🍒.. Awwnn 🥲😢
*soo, Wut is Fung saying???? I can't Eat Oranges?????*
*I Know that NONE of these NarcistAssHoLes wiLL Ever RePLy!!!*
I love my apples or any fruit I will miss it
@@toriwolf5978 exactly!! I still eat them.. 🥲😅 I mean, it’s fruits! 🥹
@@TheEuroGirl. i believe eat fruits very healthy,
Eat your favorite fruits. Just avoid foods with added sugars.
MY takeaway, although you didn't say so is moderation in all eats. I am a believer in the fact of an all-wise Crea-
Tor, so nothing harmful comes from his hand. 1: we do not know how best to utilize naturally grown produ-
CTS and 2: unwise eating habits give fruits for e.g a bad name. Point : they do not cause Glucose spikes, so you said. It's their meta-
bolism by the liver that causes a problem; your statement, Dr. An enlight-
ending Tutorial, thank you Dr. Fung.👍🤔🌴
I looked into the fructose studies almost a decade back. Almost or all of them proved negative effect of fructose when consumed above balanced daily energy requirement and usually in a form of drink on one go, overwhelming the metabolism (which was the aim to study the effect of fructose). High consumers had adverse effects, but in moderate consumption its negative effect didn't show up. And in sports it was found to be even more beneficial to provide extra energy, due to fructose having its own transport protein in our gut, so more sugar provided to the body. Some of fructose is converted into glucose in liver, so it isn't as clear cut as you say that it is turned into fat. People shouldn't be afraid to eat their fruits, but gulping litres of soda each day is not right. Those will see negative effect. Plus, the majority of HFCS in sweetened drinks is very similar to sucrose from beet or cane: 55% fructose with 45% glucose in HFCS. Only a few products have truly a high fructose content, up to 90%.
Can you talk about why some people stall even with 2-3 day fasts
eat more protein when you do eat, do resistance training