Dr. Jason Fung - 'The Aetiology of Obesity'

Dr. Jason Fung completed medical school and internal medicine at the University of Toronto before finishing his nephrology fellowship at the University of California, Los Angeles at the Cedars-Sinai hospital.
He now has a practice in Ontario, Canada where he uses his Intensive Dietary Management program to help all sorts of patients, but especially those suffering from the two big epidemics of modern times: obesity and type 2 diabetes.
Dr. Fung uses innovative solutions to these problems, realising that conventional treatments are not that effective in helping people.

[@richardgeorge6454]

I have been trying Dr Fung's ideas for 5 weeks now (low carb low sugar / 20-4 Fasting). I am amazed by the effectiveness of Intermittent Fasting, not only have I lost 14 lbs but I was taking 136 units of insulin a day and I am now COMPLETELY OFF insulin and my blood sugars which averaged around 9.5 are now averaging 5.4. Dr Fung I applaud you !!! Thank you for this wonderful change in my life!!!

[@melgon25]

That’s amazing. Great work. Thanks for sharing. How’s it going 2 months later?

[@kamillatoth3433]

That's amazing! Do you do it paired with calorie restriction or are you eating just as much as before?

[@jimmckay2337]

That is amazing that you were able to fast that hardcore right away. I waited 3 months before I tried just 16:8 fasting. Congratulations.

[@ZZ-yw5sh]

I’ve just started a 20/4 fasting too. It is going well..it doesn’t seem to bother me to not eat for 20 hours. Maybe because l have plenty of fuel on my body right now😆. Good luck to you. I’m looking forward to more mental clarity and weight loss!

[@jenniferbecca3050]

Dr. Fung's idea doesn't always work so well when you have hypothyroidism and insulin resistant combined. A lot of women gain weight with hypothyroidism and become type II diabetic. My mom is one of them and only eats 2 meals a day; couldn't lose weight. She is on an iodine protocol (100mg of Lugol's iodine and certain vitamins) that I found from Dr. David Brownstein and Dr. Jorge Flechas, that helps both hypothyroidism and type II diabetic. I found this protocol last year. She's been able to lower her insulin medication, because the iodine has helped lower her glucose & A1C by removing toxins and improve her hypothyroidism. This has helped her to lose 13lbs, so far. Unlike me, if I eat 2 or less meals a day, I gain weight.

[@margaretoconnor874]

Dr Fung , you are a genius! I found your book a year ago and as a 73 yr old retired nurse, I followed intermittent fasting and LCHF. 50 lbs later, I do not have to die fat. Wish I could give you a hug! Keep on keeping on and I will try to inspire others! God Bless you!!!!

[@pattywedge5489]

Margaret what intermittent fasting did you do? How did you eat Low Carb and High Fat? I need to do something! I am 50 and going through Perimenopause now and my body has lost its mind.

[@sueholt4266]

I’ve lost 50 lbs too! Love this man ... I’m 69 ... I’m with you ... we’ve also extended our life and with a sound mind! Literally, when I saw one of his video ... I immediately started Keto and IF ... most days OMAD. My mother was confined to a nursing home because of uncontrollable Type II Diabetes ... she had seizures, multiple strokes, Dementia ... unable to self care ...as I listened to Dr. Fung’s video ... he described my mother ...and wrong treatment she got ... and her Diabetes have been reversed.

[@RiseofTruthNow]

@@sueholt4266- that is so wonderful! What a great story. I will pass it along. I am so happy for you and your family, how is your mother doing now? My mother had dementia and although she was very strong from a physical standpoint, she passed away due to her disease.

[@homesteadtotable2921]

@@pattywedge5489 I have coffee with cream and no sweetener in the morning to maintain my sanity (good coffee is my one addiction, and I'm okay with it, lol), and nothing until lunch, my biggest meal, then eat a lighter dinner, then nothing again until lunch the next day. It takes a while of getting used to, and you may want to have a fatty low carb snack you like available to you while getting used to the routine (I just bought "keto fat bombs" and kept a couple in my purse. Saved me when the supermarket was handing out ice cream samples, I had a sanctioned 50 calorie fatty snack bite from my purse in stead). I've lost 30 pounds in 6 months. I did do a 24-48 hour fast on average once a month at the beginning, but I found out I was pregnant recently, so I'm just sticking to eating what and when I can as I cope with morning sickness. The plan is to not gain a ton of weight while pregnant (going by the weight gain recommendations for overweight and obese women), so it's easier to resume the two meals a day routine after baby is born and keep losing weight.

[@crpth1]

TODAY, is the day to write a comment. THANK YOU SO MUCH DR. FUNG! Since the beginning of January 2020, my body went totally nuts and I put an extra 16 Kg in 1.5 month!! Beside feeling really sick and generally like crap. Added to the covid19 "thing" and some infections just added to dark the spectrum. My doctor was very concerned, but not more than me. The downward spiral seemed unstoppable! All felt and looked so grim, that I had a very serious conversation with my wife and daughter. To explain about some paper works and other matters, just in case... That's how serious it was. :-( My trousers went 3 numbers up!! To the point that one day went to a meeting with the shirty hanging out of my trousers. Simply because I couldn't tight them up! Shortly after, I had to cancel a meeting. Because I didn't had any pants that fitted! In one word, awful! Meanwhile a few months ago found the work of Dr. Fung, Keto, omad, intermittent fasting and so on. So TODAY, I write because I'm wearing my old pants, for the first time since January!! :-) I'm not there 100%, YET! But it's getting close by the day and feeling way way better. BTW type 2 diabetes, gone. High blood pressure, gone, cholesterol gone... Today is the day! Cheers all

[@skanlez7]

14 months ago, I watched this video and it completely changed my world. I was a personal trainer for about 5 years and what I was taught was all wrong. I feel terrible for giving my clients bad advise. I lost 32lbs within the first 3 months and I've hit my body set weight and keep the weight off. I feel good, healthy, high energy, good gut, and have been told that I haven't aged. Thank you Dr. Fung.

[@LTPottenger]

It takes true genius to always keep learning and growing in your craft! Some of the many benefits of fasting and a lower carb whole food diet on the immune system, blood pressure, blood sugar and anti-aging, all backed up by clinical data: The hunger hormone ghrelin lowers over time with extended fasting and rise from dieting Thymus stem cells are regenerated, which suppresses aging and renews the immune system. Fasting stimulates phagocytosis, the ingestion of bacteria and viruses by the immune system. Blood pressure is quickly and dramatically lowered, which is very important for a good outcome with the current pandemic. Fasting increases nitric oxide, which has manifold postive effects like reducing arterial plaque. Weight loss from fasting only loses10% lean tissue and 90% fat compared to the typical 25% lean tissue and 75% fat lost when calorically restricting for long periods. Blood clotting is reduced and blood clots and arterial plaque are reabsorbed into the body. Vitamin D plasma levels are increased, and vitamin D in turn increases autophagy! Blood sugar and insulin are lowered, allowing white blood cells to move more freely throughout the body and do their job. Ideal blood sugar is around 80. Some viruses activate glycolosis (the release of sugar in the body) and clinically it has been shown that decreasing glucose metabolism in the body weakens the influenza virus. Fasts of several days will not affect short term female fertility and may increase long term fertility especially in women with PCOS. It's absolutely fine for cortisol to be high while fasting, because it produces sugar from fat instead of lean tissue kzbin.info/www/bejne/nZqodZSar9R4qNU Does the body prefernetially prefer glucose as a fuel? No, it never uses mainly glucose for fuel and using glucose for fuel is very biochemically damaging! kzbin.info/www/bejne/hJeUm6qDl9uBrtk The hormone Leptin is an immunomodulator that keeps the body from attacking itself and obesity causes leptin resistance. Fasting very quickly reduces leptin resistance and leptin levels and one day of fasting can cut your leptin levels in half and gets your immune system working properly again! Is fasting just the same as caloric restriction? No! Dieting increases the hunger hormone ghrelin while fasting decreases it and has many other health benefits! kzbin.info/www/bejne/qYfPXqGfoc2KgsU When you move out of MTOR your body shuts down the building blocks of the cell which are used to produce organelles and proteins. This means the mechanisms needed by viruses to replicate are by and large unavailable when you are in a deeply fasted state. It stimulates the AMPK complex and activates autophagy. Autophagy (literally self eating) will cause cells to recycle foreign matter such as viruses and kill cancerous and senescent cells. AMPK does many helpful things in the body including activating the body's antioxidant defenses. Does fasting burn muscle? In most cases no! kzbin.info/www/bejne/qpa0epSLa9yjaNE Fasting can make you gain muscle faster: kzbin.info/www/bejne/a4OwaXqIr9h8f8k Deep ketosis virtually eliminates chronic inflammation in the body. This can offset the life threatening symptoms of viral pneumonia which effectively kills you through inflammation. This also creates BHB ketones in your body, which also help your immune system and anti-oxidative system, especially in the brain. Ketones also provide an additional energy source during infection, which is critical when trying to fight off a bug. In fact you can have as much as three times the total energy available in your blood when you are in deep ketosis, or even more. It increases mitochondrial function and repairs mitichondrial DNA, leading to improved ATP production and oxygen efficiency and thereby making cells better able to fight off infection. Increased mitochondrial function also has the added benefit of increasing your metabolism and cancer prevention! Fasts from 36-96 h actually INCREASE metabolic rate! kzbin.info/www/bejne/eJamkJp_h5eNZ5Y Your body releases interferon which is also triggered by the body during viral attacks to shut down the replication ability of the surrounding cells and stop infections. After 72 hours or more fasted, your body actually recycles large numbers of immune bodies and creates new ones, rejuvenating your entire system. When you fast, this stimulates apoptosis in senescent or genetically damaged cells. This kills these cells off completely. Senescent cells are responsible for the effects of aging and are the root cause of the development of cancer. If it were possible to destroy them all it would completely stop aging and cancer. That is not possible but fasting can help limit these effects by killing off many of the affected cells and limiting the future effects of aging. Fasting also releases BDNF and NGF in the blood which stimulates new nerve and brain cell growth, helping a great deal with diseases like MS, peripheral neuropathy and Alzheimers. In fact, the biochemical regulator of BDNF production is beta-hydroxybutyrate, which is the same ketone the body produces to nourish the brain while fasting. Autophagy induced by fasting even helps hair regrow. What breaks a fast? kzbin.info/www/bejne/bZK1faZ5pd2sadE Dieters losing weight through intermittent fasting show greater reduction in waist size and increase in insulin sensitivity for the same weight lost and alternate day fasters were shown to lose fat while gaining muscle at the same time over a six month period. Does fasting lower testosterone? No, it raises it and builds muscle! kzbin.info/www/bejne/nHu4daiZd7ypatU Fasting has been shown to increase bone marrow volume by 10% and levels of carnosine in the body in as little as a few weeks. Fasting also increases telomere length, negating some of the effects of aging at a cellular level. Eating one meal a day can bring most of these benefits to a lesser degree, and adding a few entire days off from eating per week will have even more effect especially when starting to feel poorly. Exogenous ketones can aid with fasting, making it easier in healthy people and allowing some people with specific issues to fast in spite of them without worrying as much about hypoglycemia. Children, pregnant or nursing women should not fast for periods longer than 16 hours. People with pancreatic tumors or certain forms of hypoglycemia generally cannot fast at all. Type 1 diabetics can also fast but it is more complicated and should be approached with caution as it could lead to ketoacidosis. Those with Addison's disease may also be unable to fast without liberal use of exogenous ketones, depending on severity. If you experience extreme symptoms of some kind, especially dizziness then simply break the fast and seek advice. Resources: pubmed.ncbi.nlm.nih.gov/7714088/ pubmed.ncbi.nlm.nih.gov/6859089/ www.ncbi.nlm.nih.gov/pubmed/23876457 repository.upenn.edu/cgi/viewcontent.cgi?article=1537&context=edissertations www.cell.com/cell/fulltext/S0092-8674(19)30849-9 www.ncbi.nlm.nih.gov/pubmed/25686106 www.ncbi.nlm.nih.gov/pubmed/24905167 www.ncbi.nlm.nih.gov/pubmed/10859646 www.sciencedirect.com/science/article/pii/S0005272806000223 www.ncbi.nlm.nih.gov/pmc/articles/PMC1413655/ www.ncbi.nlm.nih.gov/pmc/articles/PMC2815756/ www.cell.com/cell-metabolism/abstract/S1550-4131(15)00224-7 www.ncbi.nlm.nih.gov/gene/25712 www.ncbi.nlm.nih.gov/pmc/articles/PMC1779438/ www.ncbi.nlm.nih.gov/pubmed/10232622 academic.oup.com/ajcn/article/81/1/69/4607679 www.ncbi.nlm.nih.gov/pmc/articles/PMC3017674/ www.sciencedirect.com/science/article/pii/S1931312809002832 www.ncbi.nlm.nih.gov/pmc/articles/PMC5895342/ www.ncbi.nlm.nih.gov/pmc/articles/PMC6526871/ www.nejm.org/doi/full/10.1056/NEJMc2001176 pubmed.ncbi.nlm.nih.gov/23408502/ pubmed.ncbi.nlm.nih.gov/27569118/ pubmed.ncbi.nlm.nih.gov/21410865/ www.ncbi.nlm.nih.gov/pmc/articles/PMC6407435/ www.arcjournals.org/pdfs/ijrsb/v3-i11/7.pdf www.amjmedsci.org/article/S0002-9629%2815%2900027-0/fulltext pubmed.ncbi.nlm.nih.gov/20921964/ www.ncbi.nlm.nih.gov/pmc/articles/PMC6141719/ faseb.onlinelibrary.wiley.com/doi/abs/10.1096/fasebj.2019.33.1_supplement.819.10 www.biorxiv.org/node/93305.full pubmed.ncbi.nlm.nih.gov/25909219/ www.nejm.org/doi/full/10.1056/NEJMoa012908 pubmed.ncbi.nlm.nih.gov/15522942/ clinical.diabetesjournals.org/content/36/3/217 europepmc.org/article/MED/22402737?javascript_support=no onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2265.2005.02288.x www.collective-evolution.com/2017/05/16/study-shows-how-fasting-for-3-days-can-regenerate-your-entire-immune-system/ www.health.harvard.edu/heart-health/abundance-of-fructose-not-good-for-the-liver-heart holistickenko.com/vitamin-d-kidney-liver-disease/ n.neurology.org/content/88/16_Supplement/P3.090 This list compiled over months of research by the user known as Pottenger's Human on youtube but feel free to copy and paste this anywhere you like, no accreditation needed! My channel which will always contain an updated list of fasting benefits: kzbin.info/door/MC_ZrmTUTGdQiIwJjZq1rg I have playlists on fasting and health and wellness. I also make a little commentary comment on health and fitness as well.

[@anomarnamloh7444]

Just reading this and I'm three years late. Pandemic & Lockdown kept me out of my Recreation Ctr away from taking classes and teaching classes, Certified Group Fitness Instructor,. I researched, researched, researched and watched lectures and read science & research papers. Found out everything I was taught to certify was wrong. I'm now an Intermittent Faster, LCHF eater and feel better then I have then in the past 30/40 years. 😁

[@dianemaliszewski2335]

I started Intermittent Fasting ,a whole food diet, low carbohydrates and low sugar 5 months ago: without feeling deprived I have lost 40 lbs. I’m 67 years old and weigh what I did in high school. Thank you Dr. Fung!

[@magicsupamoggie]

Im feeling very emotional listening to this. I have eaten healthily, walked and exercised, try to stay active all day. I have felt hungry and eaten more than I intended, tried eating regularly to keep blood sugars level but in the last 3 weeks I have tried IF. Oh my goodness! Im not hungry all the time and I have lost weight. This seems to be the missing link in my conundrum. Thank you Dr Fung. Your explanation makes so much sense and to hear someone explain that we are not all gluttonous lazy slobs as so many people think we are just brings tears to my eyes.

[@reesedaniel5835]

I have been doing KETO, IF and OMAD or 2MAD for 2 months also a few complete 24 hr fasts thrown in. I have lost (MAYBE) 4 lbs tops. I have not weighed myself I'm going by how my clothes fit. I had planned to weigh myself when my "skinny" jeans became looser in the waist and legs. That never happened. On the flip side of the coin, my husband, who also needed to lose around 30lbs same as me, started keto with me and has even cheated and ate candy and corn on the cob a few times and the fat is falling off him. He has lost at least 20 lbs so far and his clothes are hanging on him. Meanwhile I still look like the Pillsbury Dough Girl 8:/......My daughter's boyfriend's 20th bday was yesterday and she got him a huge chocolate cake. It was sitting on the counter of my kitchen and at first, I covered it with a towel because chocolate plus cake for me is like crack for a crack addict. The cake finally won after I looked in the mirror at my manly looking protruding belly and huge 41" lower circumference that refuses to budge. My waist used to be tiny, I could not believe how small my tops and pants were after cleaning out a closet a few months ago. My 20 year old daughter thought they were the clothes of a young girl. Too small even for her and she is skinny. And this was when I was in my 30s!! I believe they are putting chemicals in the food to make us have metabolic disorder so that the fat on our body takes on a life of it's own and puts out hormones that prevent weight loss. It seems to effect mostly women because of our lack of testosterone or muscle. Anyhoo, I ate the DAMN CAKE!! I felt rebellious and GOOD doing it too!! Not losing weight after all that effort makes the cake look all the better! I mean why not? It's like i'm just spinning my wheels for nothing,.....I thought by now (March) I'd be back in my size 12 jeans and shorts (size 10 is my goal and I'm talking Old School size 10, not today's vanity size nonsense). I'm gonna keep trying because my only other option is to go back to eating their purposely poisoned Franken food. Now I know why the "kosher elite" like to use the phrase "Let them Eat Cake".....Bastards.

[@kimberlycooper4170]

@@reesedaniel5835 , how are you doing now? We all have our own DNA. Also from what I've seen, menopause makes losing weight take more time. Instead of making weight loss your goal, how about making the lowering of your insulin your goal? Also, some people need to go carnivore to lose weight. Hope this helps. Good luck! 😀

[@nima16042]

Reese Daniel it’s okay! Losing weight you took years to put on will take more than two months. Make sure you are not reducing your physical activity while IF as well, actually throwing in a chocolate cake slice was probably good because it will rev your metabolism back up. We all need a treat once in a while :) sounds like you’re doing great, keep at it

[@gerryjtierney]

The point is you weren't "eating healthily"

[@oana-andreear8844]

@@reesedaniel5835 stop feeling guilty and get a check up from a doctor. Mine thought i had cushings. It turned out that I didn’t however, i learned a lot about the importance of going to a check-up and to get your hormones tested as a lady. It might not be your fault, but some hormones not working properly inside. Get yourself checked out and you’ll at least know if you’re struggling for nothing. I tried to loose weight with nutritionists and diets for 2 years, i only gained more. I got myself checked up, found out my insulin resistance was over the roof and now i am on IF and a low glycemic index diet. I lost 2 kgs in 1 week by following this and taking walks out in nature. I don’t drink alcohol unless it’s a special occasion, don’t smoke and always loved fruits. What got me to gain weight was stress initially, then i went to a nutritionist and i started eating 3 meals per day with 2 snacks as recommended by the doctor instead of fasting as i previously did. I kept on gaining weight. Get your hormones checked up and then try if. In about a week or two your sugar cravings will go away. Fingers crossed you will succeed to have the same result as your partner.

[@swanee22]

I 3 personally know 3 people who followed his advice, lost weight, got off of metformin, and have really good blood work now. Dr. Fung is the man! Read his books (or listen to them). His series on youtube is excellent.

[@roderickbashford6574]

A true inspiration 3 years ago i listen to this and followed his advice. I went from 115 kilos to 86 kilos today. Dr Fung is a Genius he uses logic and observation. If all doctors where like him humans would be a lot healthier. Thank you Jason.

[@ravinc1568]

Congratulations Roderick. I was not having extra weight by any chance, just 3/4 kgs than ideal. I just happened to come across Dr. Fung today. A few months ago I binged on Dr. Robert Lustig's videos and cut down sugar, now I use 1/2 tsp only per day. I lost 8kgs and have reached my targeted weight, which I was trying to achieve for 6 years. I used to exercise daily for a long long time (still do it cause it brings positivity for me personally). I have even told my Parents to do the same, I hope they do it soon.

[@ironjohnlad]

Every time I revisit this video I am filled with gratitude for this man who helped to reverse T2D, loose 50lbls in weight, reverse brain fog and memory lapses and improve my immune system. He is brilliant truth teller. I am surprised he has not been taken down.

[@debbieheine536]

Dr. Fung is the best!! His explanations are wonderful.

[@oscarzepeda1558]

I Super Concur !!!!!!! Hi Debbie !!!!! how long have you been fasting ???

[@MrAutospec]

Deserves a Nobel Prize!!!

[@1978UA]

MrAutospec Dr. Bernstein started this 42 years ago. The noble prize belongs to him. But I love Dr. Fung. I found him first on you tube.

[@WestieKatie]

I agree

[@CatholicCarnivoreHousewife]

Amen!

[@annadeblasis3665]

Apsolutely, this can save most of america and save our children from making out mistakes !

[@waulau8]

@@annadeblasis3665 It Save the world, not America only.

[@uskixs]

I love the Obesity Code. Have lost 12 lbs in 3 weeks already (much more to go). What struck me is that I am back to what I always deep down knew was the way to lose weight: just don't eat. That's what I used to do, but then I began listening to all the mambo jumbo out there and kept gaining wait. Super easy and effective! I feel great!

[@melgon25]

How’s it going a year later? Would love updates from all of you, you’re encouraging us!

[@maryamhamid6003]

That’s exactly what happened to me. I listened to morons telling me I need to eat and eat and eat and eat lol

[@felicia3760]

Awesome did you do keto

[@richardlawson6787]

Not only easy but freeing....free from making a mess in the kitchen three times a day...free from calorie counting...and the results are amazing!!!

[@hotcheetoes]

Wow. Such an eye opener. I was one who lost 175 pounds and gained 50 back this past year. Why? Because my hunger levels were through the roof! I became hungrier than when I was 175 pounds heavier! Here I am. Keto day 4 and seeing a bright future and understanding ahead of me.

[@shawnmclean7707]

hey, any update?

[@santicruz4012]

How are you doing now, David?

[@Nico-kz9bv]

Update?

[@TheStancutler]

Dr Fung you have just explained the problem of obesity so well-thank you

[@Whatusay.89]

Thank you for your work! I am a RN and I am so sick of the obesity-causing chronic illnesses. Something must change! Intermittent fasting is the diet of our ancestors when food was not readily available in a refrigerator and we survived! You deserve all the rewards coming your way.

[@aliendroneservices6621]

I am not obese, and yet food is readily available in my refrigerator. How is that possible?

[@h.o.j2375]

@@aliendroneservices6621 Would love to hear from people like you how some people are able to maintain ketosis at 70g carbs, others at 50g and some only able to maintain it at 20gs. If you even understand this at all. People like you seem to think everybody out there is an exact cardboard cut out of yourselves, please enlighten me. Also enlighten me as to how you know you’re not TOFI? 40% of average weight people are metabolically unhealthy, meaning they have some form of insulin resistance. Insulin level is not something that you can find out in a normal test. You may not be obese but you certainly have every chance to be as sick or more sick than an obese person and don’t even know it. Referring to your refrigerator full of food and that you’re not obese is as a stupid comment as they come.

[@waulau8]

To me he is one of the Greatest doctor I ever seen. So helpful and so honest ! A very kind man. Thank you Dr Jason Fung.

[@oscarzepeda1558]

"Why Are There Fat Dr.'s ???? " Preach Jason !! Preach On !!!!!!!! Jason Fung Is Thee Health Superstar !!!!

[@oscarpratyash]

Low carb, low fat, plant based diet, Intermittent fasting, fasting, unprocessed foods made me loose 40 pounds in 3 months.I have reversed my diabetes and fatty liver and I feel more energetic and healthy than ever.

[@jskywalker20]

can you share your typical meal for a day ?

[@annadeblasis3665]

I agree , he deserves a noble prize!!

[@jimmckay2337]

I have been keto over 2.5 years and intermittent fasting about 5 days a week for 2 years. I lost 50 lbs., maintained my new healthy weight, and have not gained anything back. I actually have to force myself to eat some days because hunger is rarely an issue. On the SAD, I was getting hungry every day after 2 hours of not eating anything. I am so happy for this new scientific information that has come forth. Thank God that Dr. Jason Fung freely gives this information to others to help them become healthier. It is a very unselfish act that shows how he truly believes in people becoming better for themselves.

[@melgon25]

Gosh this is so enlightening. I’ve been watching Dr Fung for the last few weeks. I have his Fasting book from the library. This explains so much. I lost 50lbs several years ago (with probably 30 more to go). I did it on Weight Watchers. It’s the first time I’ve ever been successful. Then, I started getting so hungry. I couldn’t figure out why I was so completely in the zone for probably 1 1/2 years and then fell off the wagon. Could not get back on. Then I got pregnant. Now I’m probably 60lbs heavier than that and just can’t figure this out! I’ve tried intermittent fasting and feel great but something always gets me out of the zone again. My whole point in writing is...it’s really interesting to hear Dr Fung say “this isn’t your fault, your not a glutinous pig”. Although I know I’ve made horrible choices, I know that. I know this is partly my fault in a huge way on a certain level. And I’m someone that would always say “I don’t blame my weight on others, I don’t blame it on emotions etc. I just like to eat and eat too much. Period. And don’t have control”. I feel like this kind of video gives me hope to try. It’s hard to lose weight, gain weight and get the courage to start again. You just keep thinking, “I’ll fail again”. Thanks for the video.

[@mariaritadairo4581]

You are a real doctor! Dr Fung is genius....he solve the problem of obesity in a very simple way IF....high fiber diet and so on...You are Gods given gift to humanity....a million thanks...job well done.

[@vicjones3992]

This guy deserves our respect - he has owned up to having given his patients bad advice

[@johntruckey6954]

Thank God for doctors like you opening everybody's eyes to these problems!

[@ronenm1313]

I can't thank him enough. My health has totally turned around because of him and his videos and keto.

[@stoicgerbil3977]

Truly a brilliant man! 💐 I can't thank Dr Fung enough for his selfless service to helping people!

[@ketowager5740]

Nailed it! Fantastic lecture Dr. Fung. Game changer for real.

[@josephebrada2999]

Great content here. One of the best explanation about IF, obesity and DM. Thank you Dr Fung.

[@48peon]

This is enlightening. I'm on Keto and IF. First time in my life time that I'm able to keep my weight healthy and reversed my fatty liver

[@chitram7586]

Wonderful. After watching Dr Jason Fung’s videos I have lost 7kgs in 2 months by very very low carb(from vegetables) and time restricted 20-4 eating

[@Yokazar]

I knew that insulin plays a big role in weight changes but I didn't think it plays that much of a role. It's pretty much the only cause (besides cortisol) for any weight gain and overrides the significance of calories completely. I think that's amazing and we need more people like you who look at things deeper and more scientific than just from the surface like you said with the proximate and the ultimate cause. Thanks for sharing this Dr. Fung!

[@Cwcs4]

Dr Fung needs to be on Joe Rogan’s podcast!

[@Trenchant468]

Christian Cardona Especially bec Rogan himself preaches willpower and shame, and won’t let anyone talk if they say otherwise.

[@volvoman1096]

@@Trenchant468 He's changed his tune. The best thing about Rogan is he is open to new ideas. He used to hate drugs. Now look who is high all the time. lol....

[@gregspeth7910]

3 1/2 months, went from 280 too 235 ! My A1C is down to 5.8 ! 45 pounds. I am 61 years old . Finally I found the key !

[@supersurfer1]

Been listening to Dr Fungs videos for a while and im hooked also read his book the obesity code. This man is spreading the best and most accurate information to cure modern disease.

[@johanliebert899]

Always get a blast on your lectures. I'm so grateful to have found you Dr Fung you have given the answers to questions I had for years and have clarify my thoughts thanks again.

[@temporary3151]

Thanks Doctor. You're persistence drives me to be persistent.

[@ktoledo8315]

I happened to come across Dr. Fung's advice and information after I wasn't feeling so well and I started noticing all these people who are bloated and waterlogged they looked exactly like me. I knew I had to make a change I don't want all the added diseases symptoms from excess weight. So after having some heart palpitations and excess water in my legs I decided to go for it. I first started with intermittent fasting and then I did a water fast for 3 days and have been juicing for a week. I have lost 12 pounds exactly since the second week of May 2018. I understand it might be water weight none-the-less I lost the 12 lb when nothing else would work. I am exercising and continuing with the intermittent fasting and making sure that I eliminate as many process carbohydrates as possible.. I'm not starving and I feel that as I continue this I will create more mass muscle mass and finally eliminate a lot of the fat. I won't have that puffy exhausted person look

[@MichaelToub]

Simply the best explanation on this topic EVER! I heard this segment on Latest In Paleo's after-the-bell !!!

[@richardmann800]

throw away the bathroom scale and just use the tape measure on your waist try for 32inches or less.

[@kuldippoudel7503]

I am continuously following Dr. Fung's diabetes reversal protocols since 2.5 years. After one year I completely kicked off my per day 60 units of insulin. Now, I am free from all medicines. During this 2.5 years I was able to loose 19 kg of my body weight and my recent HbA1c is 6.2. Albeit, I am suffering from dawn phenomenon. I would be grateful if he could suggest the way to get rid from dawn phenomenon.

[@mamamia4147]

If only Politicians had common sense like Dr.Fung. Life isnt rocket Science. Just a little common sense goes a looooong way

[@LTPottenger]

Like the medical industry they are corrupt

[@ngun178]

Funny how these important videos don't get too many likes, but you see a mindless video of people acting foolishly and they get 100k likes. Youth today...

[@marcoursi6062]

Dr Jason Fund should team up with Dr. Robert Lustig..they are great!

[@marcoursi6062]

I meant Fung

[@hitruth]

Best health advice in years....

[@youareindenial4413]

Thank you, Dr. Fung.

[@bryanvandyke0]

Dr. Fung drinking game. (Have a large glass of water on hand. ) Take a sip Everytime he says "right?". ;)

[@greenlight8819]

Bryan VanDyke I'm game! Lol is he Japanese?

[@hotcheetoes]

Adding some pink himalayan sea salt to my water and I'm in!

[@orangenblue6981]

Did it. Drunk AF

[@drewb1263]

David Trejo snake juice?

[@juliejoseph2201]

Bryan VanDyke He says the word right in such a “ pleasant” way!

[@iaindennis3321]

My Grandmother was a Victorian lady, she knew that bread, biscuits, scones, cake and sweets made you ill and fat - why and when did we forget what she had known all her life?

[@walkernick86]

We have Ancel Keys to blame for that!

[@cici79]

@@walkernick86 - WOW! Thanks so much for that tiny tibbit of gold info on Ancel Keys. What a monster as well, as the people & organizations that he colluded with to lie to the American people, to the global humanity. Thank-you & God Bless !!!! 🥰🙏🇺🇸😘💖

[@oldschoolprepper2273]

Thank you so much for the information ! I finally have possession of the keys to good health and weight loss and can turn it on and off at will with a good balanced keto plan and intermittent fasting it’s too easy

[@Redheadedlady55]

~I am so thankful for what you do...to help us....keep up wonderful info.....I want to watch them all....

[@scotchfillet]

The power of change is with the individual and not groups based on #ProfitsBeforePeople. Keep up the great work in #PeopleBeforeProfits.

[@awaitthegroom]

I have been intermittently fasting for 5 weeks = lost 12 lb and off Metformin blood sugars all normal. Still on Dapagliflozin until I lose another stone but feel great exercising and clothes all falling off me !!

[@clichayed97]

This is the quote from the textbook "There are also many programs that recommend specific food combinations or unusual sequences for eating, but none of these approaches has any proven merit." What Dr Fung says at 4:12 is taken out of context, I believe Joslin was talking about specific food combinations and not caloric deficit. The book states a couple of sentences before this "Many different diets that provide 800 to 1,000 kcal per day are in common use, and with adequate compliance by the patient, these diets should result in weight loss."

[@sharafk4]

I used to watch chris gethin video for my gym schedules .In the video he says the ratio of burning fat will be very less if you have sugar/carbs in thd body so cut off all the sugar first to burn the fat drastically and he was right.Since then i always wanted to know whats so special with cutting off of carbs .After watching Dr. fung's videos now i have the answer :)

[@patrickproctor3462]

At 26 y/o, 5'9", and 230 lbs, I can definitely say 23:1 fasting isn't hard after your first week, and as long as you know the tricks to killing your hunger (black coffee, a couple salt rocks on the tongue), you can get through it without much difficulty. Sure, swapping to a paleo or keto-style diet on top of that can be psychologically challenging, but I would say everyone should learn how to cook for themselves. And with only having one meal a day, your food costs go down.

[@jennybutler637]

Keep up the great work told my doctor to follow your programs fasting and koto worked for me

[@jessicaraewood5016]

Wish he would do a video of his full week of eating! :)

[@antoniodelasnievesstoner7012]

This is game changer. Thanks Doctor Fung.

[@lorenatx89]

This was an excellent video! Thank you for sharing 😁!

[@mnelson2008]

I agree with ALL it. Fasting is key. The only real issue then is, it STILL takes willpower to fast. One must STILL not eat for certain periods of time. Yes, the answer is simple: don't eat. Deplete your "freezer." It's the application of this remedy of fasting that is, again, the problem.

[@ktoledo8315]

It is difficult initially, but so are a million other things. A little bit of coconut oil can be taken to satiate the hunger pangs, it won't break the fast. Nonetheless if one really wants it they will do it.

[@spaceghost8995]

@@ktoledo8315 It DOES break a fast. WTF is wrong with you?

[@RBzee112]

If the meal you eat prior to fasting is low in carbs, you won't get the insulin spike and crash. That's what makes you hungry during the fasting window.

[@rodneybooth4069]

So true. Been there for 40 years.

[@shwetashukla5759]

God bless this amazing human 🙏

[@colorsofavon934]

He's a genius. Thank you for sharing this.

[@jrowenjr]

Brilliant!

[@amazingearth]

I'm a 53 year old male. (picture is my wife). I had diabetes II for 7 years and I've been fasting for 2 years now. My weight was from 215 to 168 lbs. My metformin is now down from 5 to 2 tabs a day. My AIC is always between 5.6 and 6.8. I eat non-stop from 6pm to 10pm daily. I eat anything. Sweets and anything and a lot, really a lot. My doctor says she don't like what I'm doing but all my numbers are OK so she said do whatever you're doing. Now I eat 3 meals per day on weekends. I am hooked to this diet and I can't imagine stopping because everyday I look forward to 6pm because I will eat whatever and I don't count how much or what it is. It's a daily feast. I hope someone tries this because it is very enjoyable. I'm loving my diabetes. It made me eat whatever I want.

[@pascalxus]

"No, we're not saying that you idiot." lol.

[@Travlinmo]

Every time I hear him say idiot I suspect he would be a fun guy to get to know better. He really doesn’t hold back.

[@hazelgabriel5739]

watching Doc for your information thank you

[@pontevedra660]

Merci unbelievably great!! Thank you from the heart, ana maria

[@Rajo1012]

There are studies on mice that show, restricting the eating window to no more than 12 hours and avoiding to eat late is now important than what they eat. There's a great video on this on KZbin.

[@josipab89]

Dr Jason Fung gives me hope for loosing weight and stay on a normal weight 👍🏼

[@VijayThakkarFitness]

Such amazing information on how obesity develops and how fasting is a potent tool against it. 🕺🕺😁😁

[@luiginanatureelles9434]

Amazing he is so intelligent and so true and human

[@PEMF.Hydrogen.LLLT.Experts]

Nice one for sure! Great knowledge!

[@DavidSellingPinellas]

I'm scheduled to have a blood test taken soon mainly for my A1C. What other things should be tested with a blood test that my Dr. isn't testing for.

[@juliejoseph2201]

The best! The best! The best! I have learned so much from this man.

[@ayimaayima2784]

That really works! 👍🙏

[@RonaldKragnes]

Etiology is the study of the causes, origins, or reasons behind the way that things are, or the way they function, or it can refer to the causes themselves.

[@jodyjohnsen]

Please explain how to fast without getting sick. If I diet I make it approx 3 days before I catch a cold that turns to bronchitis or pneumonia if I don’t come to a full stop. (Asthma and allergies) If you have a suggestion I’ll try it.

[@rum867]

How do I make sure my glucose doesn’t drop when I’m fasting, IF. I’m diabetic

[@freequest]

Wiser than a goldfish in a spacesuit.

[@welmorrehabilitation2621]

Hatur nuhun....thank you very much

[@politmediter]

I started Intermittent Fasting. I rested the whole day. Within the first 20 hours my blood pressure shot up to 171/98. After taking a pill to decrease my BP,, I ate and slept. Next morning felt good and continued fasting. Iexercized moderately. Within 20-21 hours my blood pressure increased again to 152/101 and had to take a pill as well as eating to stop the headache and red eyes. 59 years old, usually elevated blood pressure to 130 plus, sleep 5-6 hours per day. In the morning of the third day, about 11 hours from takind pill and eating, blood pressure at 135/74. Perhaps you could enlighten us with this aspect of fasting? From a small internet search I read that fasting causes an increase in blood pressure to: 1. People with hypertension 2. People who wake up before sunrise. Is this consistant with your model?

[@kazzana9013]

I found if I got a headache I ate some salt. Headaches and dizziness disappear if I made sure my electrolytes, my sodium, potassium and magnesium were adequate. Water is really important also.

[@yosefsugi1808]

thanks so much doc & all team low carb under 👍👍

[@memeee9573]

hahaha he is amazing, greating from Dubai.

[@Solidfreeman01]

That´s an interesting presentation....... right? ;-)

[@yvonne3903]

At my sister's wedding about 40 years ago, it lasted about 3 days we had different functions over that time and there was way too much food. Loads of gateaux which I love, so I ate too much gateaux, but missed other foods so calories were approximately the normal, but my clothes got tight in 3 days and that's when I realised that there is a difference between calories.

[@kwnfit]

I have seen the light.

[@SajjadKhan-io2vd]

Does waterfasting help crue lipedema??

[@andyrwebman]

In terms of the laws of thermodynamics, there's another complication which affects the "calories in equation" - namely "how bioavailable are the calories I'm eating"? How do we measure the amount of calories in a given food? Typically, we use a "bomb calorimeter" - which is a fancy name for "burn the food until it's completely used up all of its internal chemical energy, and measure the energy it gives off by seeing how much it heats up a sample of water. 1 degree Celsius change for 1 cc of water = 1 calorie". Several people have asked the obvious question "how do we know that being able to produce a calorie of heat when burned translates into a calorie of available energy for the body?" I'm sure, as an extreme, we could all imagine some kind of flammable fuel that the human body has no ability to process for food at all - i.e. zero bioavailability. More prosaically, we might ask if the oils in a peanut will give our bodies the ability to do the same amount of work as the equivalent in "calories" of sugar? Finally, even supposing the two food types can both be utilised for energy, does it necessarily mean that they can both be stored as body fat? The obvious case for carbohydrates is "they boost insulin, and insulin pulls sugar from the blood into the fat cells." Fine. So what's the equivalent if someone eats a zero carb meal with protein and fat? Can it be stored as body fat at all? If so, is the efficiency reduced at all? There are many more questions I would love to ask Dr Fung regarding this.

[@benlolmaugh4256]

I love Dr Fung but isnt fasting still CICO and caloric reduction because fasting for 24hrs is functionally 100% calorie reduction. Or is saying CICO as a specific diet measure without fasting, so keeping insulin spiked throughout the day, is the problem.

[@khairy222]

Amazimg👌

[@benbrewer5853]

I've always wandered why some people can drink 2 beers and cant stand up and some people can drink a case and doesn't effect them at all

[@czarzenana5125]

So explain this: my father was diagnosed with diabetes type-I when he was 30 y.o. He started injecting insulin in high doses (100 units a day) because in those days (>45 years ago) it was very hard to keep his sugar levels stable. Due to the high doses he also had to eat a lot and he did eat a lot and very healthy: no sugar, whole wheat bred, low fat, hardly any alcohol etc. but he lost 20% of his body weight right after starting with insulin, like within 1-2 weeks. He fought the rest of his life against low body weight until he died at the age of 70 y.o. His brother was diagnosed with diabetes type-II at the age of 60. His brother started injecting insulin but kept on eating sugar. He was always very low weight for his height but didn't gain a gram of weight after starting with insulin. My sister was diagnosed with diabetes type-I on the age of 40. Like all of us she was also quite thin. After taking insulin she never gained any weight, nor lost weight. So apparently there are people not gaining weight at all when using insulin and some even lose a lot of weight when taking insulin. I am not questioning what dr Jason Fung says though, I think he is highly intelligent and by far most people gain weight after taking insulin.

[@Olivia-W]

1). Type 1 is different than type 2 2). It's not entirely about insulin, but also insulin sensitivity In type 1 diabetes, a person does not produce insulin. In type 2, a person is insulin resistant. Their cells do not react appropriately to insulin. A type 1 diabetic can be properly insulin sensitive, which means that their cells react the way they should to insulin. Of course, enough external insulin given often enough could also make them grow fatter, but apparently that was not the case with your familly. Type 1 and type 2 are completely different diseases, and I have no idea why they're both called diabetes.

[@LTPottenger]

type 1 diabetes means you have low insulin, not high.

[@jonathanemanuel2088]

Whilst I know that this approach works for weight loss, I am still struggling with the science of it. He says that reduced calories does not work and fasting is the answer however, it is almost impossible to fast without reducing calories, so how do you separate the two in order to know which one is causing the weight loss.

[@ilanamenachedwek7561]

I believe its because when he says "reduced calories diet" you are still eating 3-6 times a day, and every time you eat (even in really small portions!!!) = insulin goes up = fat storage increases. When you fast you give your body the time to decrease insulin, and glucagon (another hormone) can do its job, that is to take the fat out of the cells and use it for energy.

[@junemarame2334]

Fat burn happens when you fasting..with calorie deficit...you still eating thereby increasing your insulin

[@niklasjuchem]

getting fat game: eat a sugar cube every time he says "right?"

[@veronikalah2718]

getting skinny game: extend your fast by 15min every time he says right

[@Nico-kz9bv]

@@veronikalah2718 thats definetly better advice

[@spencerheath5085]

Question here how big does a fat cell get before they begin replication then in the opposite direction how small does a fat cell get before they begin to be eliminated, hinging a bet that the same signal is given if the cell is still there but just smaller

[@AS-gx4qg]

Where are the studies that shows long term weight loss of fasting? (I fast myself)

[@_Pumpkin_Seed_]

I love jason fung, but if only.... I a had a dollar for every time he says ''RIGHT''.

[@sharonrose2751]

My hunger doesn’t go away when I fast up to 24 hours. Maybe I need to try longer fasting. I figure it’s because I’m way under my set point due to a huge weight loss and always hungry regardless.

[@peterschroeder6665]

Fasting is trained. I frequently goto 40 hours and get very hungry intermittently lol. Just drink some water when you get cravings. I do 40 hour fast once a week, 2mad after fast and Omad rest of the week. Repeat rinse 2 to 3 pounds per week.

[@melgon25]

Also, I would love to know what the solution is for type 1 diabetics. I have a friend who is insulin dependent. I would love to point her in a right direction.

[@Olivia-W]

@John Smith Someday it's hoped we'll be able to grow pancreatic cells in a lab. Some very early tests suggest it's possible. But this is a long way off... DIY closed loops like OpenAPS for people willing to experiment could be a help.

[@junemarame2334]

Type 1 is different from type 2...your friend has to take insulin...since her immune system destroys cells that produce insulin. Type 2 is caused by insulin resistance.(high insulin)..you would put her in this direction if she suffered from type 2. Dr fung speaks about type 2 not type 1

[@heidivernathorbjornsen475]

I hope, Dr Fung that you will speak on how to lower high cortisol and how diet relates to this process - as well as stress .

[@reesedaniel5835]

Get rid of the "FED" and the "kosher elite" that have taken over our country, govt, corporations, schools, money system and food supply. That will get rid of every bit of stress in One Fell Swoop ; ) These parasites were thrown out of 109 countries in the past. If only we had done the same, we would live in the best nation on earth instead of being a herd of worked to death, slowly poisoned, diabesity slaves.

[@LTPottenger]

Cortisol makes blood sugar. It will go up when you fast, but once you eat again it will become lower than before you started the fast. In the short term stress is good, in the long term bad.

[@ahmedthamir9531]

I didnt understand why the body lower its metabolism with less caloric intake ?? I mean , you eat less to force your body to burn its storage ..right ?