Intermittent Fasting for Weight Loss w/ Jason Fung, MD
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- Опубликовано: 2 авг 2024
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-------------------------------------Key Takeaways---------------------------------
0:00 Intro
2:17 History of Fasting: Fasting has been done since the dawn of humanity. Religions prescribe periods of fasting. Ancient Greeks did it for mental clarity. In the last 50 years there has been a strong move against fasting.
3:06 Nothing Wrong with Fasting: Dr. Fung investigated fasting and found that fasting had a great many benefits. Periodic fasting allows your body to burn off fat. Dr. Fung uses it with all of his overweight patients. Blood sugar medications need to be monitored closely once implementing fasting, or blood sugar could go too low.05:25 Hypoglycemia: If you are taking blood sugar meds, you may become hypoglycemic.
9:42 Muscle Loss and Fasting: Starvation mode and muscle loss are two of the many myths. Hypoglycemia is not a big concern unless you are taking blood sugar meds. As you fast, you will consume glycogen.
16:53 Hormones of Fasting: Fasting increases growth hormone. It increases noradrenaline. These are counter regulatory hormones, which counter the effect of insulin. Insulin lowers blood glucose.
22:04 Three Day a Week Fast: Dr. Fung does 24 hour fasts.
26:32 Anti-Aging Benefits: Skin is protein, so skin may alter with intermittent fasting. During the process of fasting, you get rid of old cells as part of renovation.
28:44 Autophagy: mTOR is a major regulator of autophagy. Protein turns off autophagy. mTOR is a nutrient sensor, sensing protein.
33:37 Salt and Fasting: One reason why Dr. Fung’s patients use bone broth during a fast is for salt intake.
35:49 Kidney Function:
37:07 Hormone Impacts: The main hormone affected by fasting is insulin.
42:17 Cortisol and Fasting: Cortisol does rise with fasting. It is part of the counter regulatory hormones.
43:14 Noradrenaline & Fasting
48:09 Calories: Calories have nothing to do with weight loss. Fasting is about changing your hormones.
49:50 Nutrient Changes in the 1950s: There was little obesity. People ate cookies, white bread and ice cream. You ate within a 10 hour window.
54:51 Bullet Proof Coffee/Fat Fasting: Many of the benefits of fasting come from reducing insulin. Pure fat has almost no insulin effect.
56:26 Ketogenic Diet: Intermittent fasting and ketogenic diet are along the same spectrum, close cousins. The ultra-low carb ketogenic diet lowers insulin. Low carb diet delivers 71% of the insulin lowering of fasting.
1:00:39 Dr. Fung’s Morning Routine:
1:03:45 Dr. Fung’s Favorite Nutrient:
1:07:54 Dr. Fung’s Elevator Pitch: We need to teach people about the therapeutic value of fasting. It has the potential to change the entire health system of the world. Most of what we do is treat diabetes, high blood pressure and all of the downstream issues. All of this can be taken care of for free. We need to spread the knowledge of how to do it. 
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*Changed my life. I will never eat the same ever again. "Unless you physically trip and your face lands in a box **weightlose.fitness** of donuts, there is no such thing as a 'slip'." Get that mind set and you'll win again and again.*
My first fast lasted 15 days. My second fast lasted 20 days. My 3rd fast lasted 40 days.
Most of my ailments were resolved.
I did hospital visits before and after, and my readings changed significantly for the better.
I stopped needing my inhalers. My osteoarthritis pains stopped. My inflammatory readings went from 1200 to 5! Two of my doctors discharged me. Fasting works
Adilyah Bat ELOHIM how did you manage to do 3 individual long fasts? Any tips would be highly recommended please?
Way to go
holy shit, I wish I had such a strong willpower, I've been into IF for 2-3 years now but I've done only one prolonged fast, it lasted 5 days.........
you can definitely join and win survival contests
Liar, liar, pants on 🔥
Fasting is LIBERATING!! Not being tethered to food is being in control
crldnlc isn’t it incredible that one can feel better, have more energy and longer days, after sleep wake up more alert, loose cravings for food and no hunger pains for any food - by not eating anything at all ! 😁
Yeah..but food is just so glorious. .haha
Exactly!!!
@@robertp7209 this is exactly what's happening to me and i'm stunned.
E vL - isn’t it so, I never believed I could not be starving hungry like day and night. Who knew? I have been OMAD for about three months now after 4 day fast. Went from 201 stabilized at 173. Actually didn’t want to go down so much. But stable now so ok. Had all to do to loose 5 lbs prior. Now I am not hungry ever, nor crave, ever. No appetite. Frankly, was easy to do. For my one meal have to eat a ton - hit the buffet places, but accustomed myself so no more stuffed feeling. When I leave not even feel full. Missed by usual feeding time today by 2 hrs, didn’t bother me at all. Although by lipids were good, have improved. Blood pressure dropped, resting pulse dropped below 50 (avid runner), ran fastest 5 miler ever, and I’m 61. I heard from everyone that getting older you slow down, metabolism slows, put on weight, etc. I don’t know what to say to them, like being from a different world 😎 Peace.
Lost 40kg in 6 months, from size 20 to size 12 and so happy for myself and my accomplishment ❤❤
This guy may have changed my life! I have lost 40 pounds so far. Not hungry anymore I have complete control now. Thank you for sharing your knowledge !
How did you start and what ste you doing now?
Awesome
Me too! I'm down 62 pounds so far... loving it!
@@joannebaletka2435 go to the website where he has a lot of videos, start there - Diet Doctor (him and a Sweedish(?) doctor)
Spiritual Dragonfly what did you do
IF is terrible for the snacking industry.
= is a pot head and still IFs... don't snack... I really hate those blanket statements...
av chimay and the breakfast industry!!! That is my theory as to why it's so under promoted. I never was a breakfast person, however all the massive marketing for it made me feel like I was wrong or unhealthy for not eating "the most important meal of the day"...but no matter what they try and push on you, your body knows what's best, it sends you signals point blank period, i dont get the signals for hunger in the mornings when i wake up so i dont eat, and im just fine, I'm in a super healthy place with my weight because i basically don't force feed myself when my body simply isn't hungry.
av chimay Bahahaha. This is true 🤣
@@chenanigans Yup i never had breakfast for many years. They told me to eat 3 times a day or you will get ulcers but i've been doing IF for many years and i am fine. I am healthy, laboratory tests all normal.. If i eat 3 times a day i get weak and feel heavy. That's why i eat mostly once a day only, sometimes 2, that's enough my body needs.
Very. And breakfast food industry too
Dr Fung cracks me up, "if you're obese you don't need any more nutrients" 57:30. 😂 Good point, nicely said.
Lmao 😂
But having extra fat in your body means that you have nutrients?
But you can have obese people who are severely malnourished because they eat lots of empty calories, food that is calorie dense but nutrient deficient. And they are driven to eat more because the body is screaming for nutrients, but they eat some more empty calories, repeating the cycle over and over. I would argue that obese people do need nutrients, as well as many other things like nutrition education, and developing a healthier relationship with food. The essential vitamins and minerals we need are “essential” because the body cannot make them and/or store them in large quantities and they must be obtained from the food we eat, while performing numerous and complex inter-related functions in the body.
@@tracygiles8789 Yeah I'd agree with almost every point you made. My only issue with that old saying of empty calories is, what does it refer to specifically as empty? Carbs, Fat or Protein? We already know that we can eat anything we want and get lean if it fits our macros but if someone is not getting enough protein, they'd like be losing muscle overtime so that could be an issue. Interesting subject!
@@carold8 being fat means your body has so much food it just places the nutrients on top your muscles and skins for safe keeping .
I did a 3 days fast and wow what a change - dropped 7 lbs in 3 days my blood sugar went from 154 to 77 and I felt great and had so much energy! Thank you Dr. Fung.
GP Bates did you do low carb or regular eating?
GP Bates how did you deal with the hunger?
I did water fast only. First I did a 30 hours. Feels comfortable. Few days later, I did a 3 days. Feels ok. Then I did a 6.5 days. Feels ok. Feels empower and in control.
First 3 days hardest. Do normal activities. Keep busy to forget. First couple days I get the hunger jitters but pass after 5 minutes. I felt a bit low energy and sluggished. My glucose count one point was 60. My blood ketone was 7.3 keto mojo.
a
That 7lbs was mostly water weight
I fast every day and eat a small meal at 6pm and most days I eat when I am hungry.but only a small meal when I eat. idrink coffee only in the morning and water the rest of the day. I am nearly 80 yrs. old and I feel great every day! no treats between my one meal.
well done! you'll prob live till you're 100!! ha
WELL DONE GRANY
YOU ARE 80 YEARS YOUNG🤗
Very suspicious, 80 years olds do not use smartphones or computers, don't they?
Rin my grandpa is 83 and uses FB and email.
Dam! I use to eat once a day along time ago and didn't even no it was a thing. I use to call it BEING BROKE.
lol! Too funny.
Cheers,
Mike
no but really, many times, the poorer people I see have better health, probably because they don't over eat , and eat crap.
danpt2000 It seems to be the opposite to me. Poor people eat like shit. They''re usually eating lots of fast food and junk food, since those are cheap.
Poor people in North America, yes they eat junk food, and cheep food here is crap. But poor people outside North America used to eat basic food, and home grown food. That is different.
I think I may have been referring to poor people in other countries, rather than in USA. You see some people in India, Asia, in some Island countries, these people appear really fit, it may be due to the abundant physical Labor, and less processed foods.
"Breakfast is the most important meal of the day"
Regards,
The Cereal Industry
Eggs and wholemeal toast or porridge is a pretty healthy and sustainable brekkie.fuck I'm hungry now
fuck those people, you can break fast whenever
lol
Neil McMahon well it IS the most important,, just not 1st thing🤙🏻
Breakfast just means Break Fast. Doesn’t mean you have to have it in the morning. We’re all fasting while we sleep and if you break your fast at 7pm that’s still breakfast so you’re still having breakfast if you’re intermittent fasting
I've captured the sound bite of Jason saying What are you Stupid & That's Crazy and put it on my phone as a ring tone ! 👍
@Vickie Gates yea. I always laugh because he’s so cavalier about it. I imagine he tells actual idiots this when they try to argue with him. I hope he does, anyways.
Hahhaaha. That's funny I hope I could do and use that too
if only all doctors were this honest
Bernadus Andrien Chandra i think they probably are (in their mind) but they just dont get taught about fasting
"right?"
@@clxma true. as a physician myself these concepts are eye opening and in stark contrast to what we have been taught right from the first year of our MBBS! they go against all the guidelines we have crammed over the years, yet i guess it's great someone like Dr. Fung has come forward and dispelled all those concepts with pure logic and science.
Most doctors are just pencil pushers for big pharma
how do you know he is honest. many politicians appear to be honest. have you parted money for his book?
I started intermittent fasting June 2016. It was easy...I lost 22 pounds in 19 days and went on to lose all of my weight which was 34 pounds by July 15. I now eat this way everyday. I have a window of5 hours where I eat. I eat clean and I DO NOT EAT SUGAR. I am 60 years old and people think I am 45. Eating this way has so many positive changes: Digestive, energy, hair, muscle, skin.....it is undeniable.
I'm impressed and inspired
Pamela Lynne that's so awesome. Thank you for sharing. Keep it up!
@Alex Gemi your stupid
Thanks for sharing that!
That's wonderful
I used to say, eating three meals a day is too time consuming and costly. I was on to something and didn’t realize it😊
@Pun Jab I really? Wow didn't know that
Omg. You're soooo smart.
It's funny. I think we all instinctively know this, but get progressively more endoctrinated as we become adults. I recall dropping weight as a teenager by simply not eating. Unintentional, but intuitively instinctual, fasting. People would always ask, how'd you lose weigt so fast. The they would look dumbfounded when I would answer, by eating less. People don't like the truth.
I'd rather have one leisurely meal that I can enjoy mindfully, than 2 or 3 where I feel rushed.
I used to complain that food was a poor investment and thought it was stupid to spend so much money on it. Guess I found the right lifestyle, then.
I'm fresh out of medschool ... I think I learned more from youtube doctors than from my professors xD
And that's with all this type of stuff being shadowbanned or outright removed from RUclips labeled as conspiracy. So many links like this I have saved and try to share to people, to find out it has been removed by RUclips.
I guess that means you’re a general practitioner then
@@sweetpotatocavy717 actually I work in a hospital in the interventional cardiology department xD why? you don't learn anything about good nutritions in university and especially not once you start working.
Well we will always need docs to patch our limbs and give us antibiotics!
Yeah... like who gets to decide what a doctor should or shouldn't learn in the med school? That's the culprit, right there.
"theres no money in fasting" doctors will say it's not healthy
Actually the doctors are extremely thrilled to bits about this as it means their [patients are getting better! Certainly the Health "INDUSTRY" will not be best pleased, though they will put all their money into low-carb products which ultimately are rubbish. but to say all doctors are in cahoots is ludicrous. Unless you live in America of course, where their corrupt health insurance system drives their Illness-service.
Lynne Gill theres too many practicing doctors to be in “cahoots” with these industries. It would be just as idiotic to believe that conspiracy theory as the other side of the Coin. However, it’s not unreasonable to think these industries have a huge influence on the medical training community, educating them to believe that fasting is unhealthy.
I read a comment from some doctor a while ago that there should be drugs created that mimic the effects of fasting. that approach sums up big pharma.
Actually your generalization about even USA doctors is incorrect. Some of are are in the business to heal.
Hispanic Heights Truth u know it well
The problem is that nobody makes money of fasting. So it won't stick. It's a sad sad world.
this is the smartest comment an truest too... I already taught my kids that. I love fasting
Secrecy1988 True, the supermarkets selling the food will be pissed, as well as the restaurants, takeaways and ultimately big pharma who cant wait to get you loaded on pills starting with statins
It works and I feel so much healthier and have lots of energy. The money saving on food is great too. My freezer has never been so full. Great easy to understand information. 😊👍🏼
Except for all the people selling books on fasting, like the guy who made this video.
Lyanna Stark realest comment
Alternate day 24hr fasting is hugely successful for me!! I'm finally losing significant weight again. First 50 lbs was IF 20/4, but weightloss began to stall significantly. Now it's almost a pound a day loss!!! Eating day is not IF. Keto meals whenever I want. Fasting day is dinnertime to dinnertime. Fasting insulin is finally controlled for me. Hallelujah! 70 lbs more to go. I am confident it's going to happen.
10:15 WIll u lose muscle if u do Intermittent fasting?
Food energy is stored as fat and sugar
14:20 Caloric restriction vs Alternate daily fasting study
16:10 Your body in cavwman das
17:10 No money in fasting
18:45 Dont do liposuction, your body can take care of that
21:40 Jason Fung fasting - He does 24 hour fast.
24:50 Why jason fung does a long fast even thogh hes lean? Cos he wants to maintain wait
26:10 Skin improves on intermittent fasting
31:00 24-48 hours water only fast for turning on Autophagy
41:40 Cortisol can go up if ur fasting, coritsol is harmone that releases in high stress environements
43:20 weight loss
50:00 1950s ppl ate everuthing still werent obese
Teja awesome thank you
LIFE SAVER
Thank you!
Thx
I’m on my 6th day of water fasting. I’m very obese and was in the danger zone for type 2 and high cholesterol. My doctor prescribed meds but instead I chose this method. I’m so happy that I did. My levels are at normal levels and my blood pressure is regulated. I haven’t weighed myself yet but I can tell I’m losing a lot of weight (loose clothes). I want to do 21 days and then start IF (16-8 method). I think modern medicine disowned this because this will take money out of their pockets. They get paid off your illness. Drug you up on medication you can barely pronounce or know what it’s doing to your body. Key factor to better health is watch your intake (learn your blood type and the foods associated with it) exercise (really moderately even short with burst of intense training) and sleeping. That’s mainly it. This video is amazing ☝🏽👌🏽
Blue Water I’ve stopped my fast yesterday. I felt that I was ready to eat again. I feel so much better since the fast. The way I look at foods now is totally different. Making better choices.
Blue Water I didn’t know how long I’d do it. I said 21 days but honestly I recommend doing it until you truly feel like it’s enough. Everyone is made differently so I would never do it to break a record or anything just for benefits to your body and mental health.
Devon Washington you're not alone! I'm on day 9 willing myself to keep going. The longest I've gone before was 14 days and I'm waiting to experience those hunger pains again when I decide to break it. After that, I plan to eat a vegan salad every 36 hours until I reach my weight loss and insulin goals. Good luck to you sir!
Devon Washington keep it up man! 😁😆
Terrazas Victim well done, you sound really motivated. Good luck in getting to your goal.
Dr. Fung is a genius! He saved my life...and I'm sure millions of others too! He deserves a Nobel prize!
a nobel prize that is not new? what?
He is Canadian not from the U.S. Everywhere else is full of honest people.
Indeed
I love his matter-of-fact use of logic. No apologies.
thanks jason fung for saving my life... fasting 4 days a week is part of my life style.. and I'm reversing my t2 diabetic.
Can u elaborate
Is that intermittent fasting per week or simply not eating for more than half of the week?
How’s it going ? My mom has it also and I’m looking on ways to benefit her but I’ll doubt she’ll wanna do it lol
The food industry would lose billions, possibly trillions with intermittent fasting alone.
So would doctors and the drug companies.
Real boxing Fan1 if is very sustainable 😂
Real boxing Fan1 if 5% of the population incorporate I.F., they would lose billions. Don’t underestimate the politics that corporations pull behind closed doors. Why do you think bread and cheese have a major section in the food pyramid?
It might be a good thing as the world population grows the need for food and farming will need to increase dramatically so if might balance things out until the next cycle
@@carlossalaises7 I absolutely agree.
I want to be Dr Fung's best friend. This guy is awesome
Agree, Alexander! His approach is so practical.
Thanks,
Mike
Yup. Skin tag fell off my face near my eye. I fast 48 hours every other day. Keto, omad and alternate day fasting. I feel amazing and weight is flying off. My body is healing from insulin resistance and my periods are regulating. When i get down to my goal weight i will prob do omad every day or a 20:4 intermittant fasting for the rest of my life.
Congrats that's great.
I do this too (OMAD). From 165lbs now down to 140lbs. My abs started showing and my mind is more focused in what I'm doing (mostly music arrangement and composition). I get more productive and get the body that I always wanted in just a couple of months.
What issues did/do you have apart from irregular periods may I ask? Sufferer of PCOS here.
I am 50yrs old. My testosterone level was 303 and I did one meal a day and after 30 days I had my blood work done and my testosterone level was 448!
What were you eating ? I did not know that OMAD can raise testerone ???! If that is the case, you have the ability to pack more muscle, right?
what do you eat?
So I would suggest exercise as soon as soon as you wake up in the morning. Also exercising in a faster state is a fat burner on steroids! So much these companies don’t want people to know! FAST ON!!!
@A.A.Ron Davis i get headaches when jogging in the sun now since I've been doing omad. Am i nutrient deficient and should i take more salt for elektrolytes? Or did you mean something else with referral to the body?
Lighting Zami It could also be due to the fact the estrogen is in A LOT of foods.
wealth of knowledge here, this man deserves a low carb cookie
Frank Li 5:50 Did Dr. Fung say 100-200 years ago you were living in a cave somewhere? lmao wtf
Frank Li lol 😂
Almighty Khan c
Almighty Khan
M
I believe he deserves Nobel price
Finally, all the questions answered by a REAL DOCTOR. Not some schmuck with an agenda.
JG Harris
Anyone selling books has an agenda. It's not to say that this Dr. Fung is not genuine and the real deal because I do believe him to be correct on these subjects but it doesn't mean he doesn't have an agenda. It also doesn't mean that agenda is bad or malicious. Just don't assume anyone doesn't have an agenda, it would be naive.
JG Harris ~ Sometimes people write books to share information first and foremost....just a thought.
I didn't even know he had a book. He's clearly passionate about this, he doesn't keep going on about his book and he's a real doctor, I think his agenda is to get people healthy. Some people's agenda is to sell books, they are the people who I wouldn't trust. This guy wants you to be healthy he's not too bothered if you don't read his book.
you don't think doctors are schmucks with agendas? hahahahahahahahahahaha
John Wick's pencil yes but most doctors agenda is to treat your illness. Not cure it. Funds agenda is to cure type 2 diabetes and obesity.
where were you all my life? 30 years of binges, self hate and food addiction was so unneccesary. I am on OMAD now, with Keto feeding periods. lets do this!!
Keto sucks
wazeem ahamed you did keto wrong
@@monjierno really. Specially if you do clean keto.
People always say "if you miss a meal your body will think you're starving and you'll go into starvation mode & store fat"
Yes. I've heard this alot. I'm glad I learned the truth early 🤗
Thankfully, Fung, and others, explain that it is the daily restricted calorie intake that trigger a slower metabolism. Even when people exercize for many hours a day, as on The Biggest Loser TV show. Even YEARS later, the contestants' metabolism remains damaged.
When we eat frequently, especially foods that trigger insulin release - sugar and starch - that makes the body store fat. As Fung says, people used to know this. No eating between meals. No sugary or starchy foods if you want to lose weight. Simple.
@@Jefferdaughter its calories in calories out. insulin doesnt make a meaningful difference. only thing that all these eating styles do is make the calorie restriction easier. intermittent fasting, low carb, make you more satiated by eating more protein. and not eating that much carbs/limiting eating time affects insulin levels which makes the sugar cravings go away etc... ie EASIER. FASTING in itself is not the weight losing trick. its the calorie restriction. which is made easier by fasting. without people even noticing it they are eating less calories. for example the every other day fasting: of course it will lose weight since your weekly calories will be a lot lower than they would be if you ate everyday. all other mental things like cravings etc should not be taken into account when speaking of what makes you lose weight. its the calorie restriction. everything else will make it easier.
@@jerppazz4525 The human body is not a closed system. The 1st law of thermodynamics does not apply.
@@personontheinternet2164 wow thats a great argument. that disproves nothing i said. -.-
The good Doctor Fung broke my irrational fear of not eating!
Fasting is great and such an amazing freeing up time tool.
Love hearing that, Ramiel!
Thanks for sharing,
Mike
Hey thank you for sharing this interview!
Best thing about fasting: you can eat quite well in one big meal. It's much harder to eat (well) 3 times over a day in my opinion.
Explosive interview. The kiss of death for the Food Corporations.
Not just that, whole approach to medicine will change in future, Dr. Fung also thinks fasting has effect on cancer.
Maybe, but imagine food corps adapting to produce better quality food, all organic, no added sugar, grass fed meat. It could force them to up their game.
Bashnja1 ... and the pharmaceutical ones
I would love for this to happen. Anecdotally, however, I think it will not. I have been salt-water fasting and I openly talk about it. My coworkers and family are SCARED. They tell me I'm insane, anorexic, killing myself, whatever. I started at 265 lbs, with a BMI of something like 35. I am not anorexic lmao. I love eating, but the fact is I've not felt this good in years. People are losing their minds, but no one said ANYTHING about my health when I was getting fat. The voice of Mother Culture is loud in the ears of the masses.
Mustakrakish I want to begin fasting. I weigh 220 and am 5’11. How is your fasting routine? Is it water only and how many days straight have you fast
I love Dr. Fung and Dr. Berg these two changing my life and the lives of others!! I'm forever grateful!!
Jacqueline Knox -Ditto and I LOVE Dr Ken Berry too!
And Dr Darren shmidt
Also Mercola and Lustig
Please don't compare Berg with Fung. Berg is chiro, he is proper doctor with observations and research in one of the most difficult specialization....
I love them as well...
Dr. Sten Ekberg is another wonderfully life-changing Doctor/ RUclipsr.
Btw for the people that wanna know. There are studies that show autophagy kicks in after 16 hours of fasting. So if ur fasting 16-20 hours u actually get alot of the benefits already. 😁
Yes if you've been doing keto for at least a few weeks you start getting benifits from autophagy slowly around 20 hours and it will slowly come quicker if you continue to intermittent fast for longer periods with a keto lifestyle.
Some reports say 12 to 14 hours it begins for someone who has been doing IF for months, but it hasn't been confirmed in a controlled study yet.
Personally I have been intermittent fasting for a year averaging 21/3.
I feel autophagy kicking in around 18 hours after a 2 hour workout and break my fast a few hours later.
When skin tags disappear, scares clear up, wrinkles around your eyes dissipate then you can safely assume your getting some autophagy going on.
OMAD seems to be the way to go but I can only do it once or twice a week.
I was 320 lbs 2 years ago, 225 a year ago, 195 today.
5'10" 60 year old Canadian male.
If I can do it anyone can.
Presently my skin in slowly tightening up with good nutrition from bone broths, collagen, omega 3 fatty acids etc... in my eating window.
My hopes are autophagy will get the job done even if it takes a few years.
Scott R thanks!!
@@terrywhelan6651 what does it feel like. Autofagy?
True!
@@terrywhelan6651 'I feel autophogy kick in'
How do you feel it kick in ?
Been doing OMAD or 23:1 for three months and I've lost 50 pounds. Fasting works!
Have you ever done several days of fasting in a row? I'm kind of curious about that ;)
Hi Brett,
I sometimes fast for up to 48 hours. Was there anything in particular you were wondering about?
XerophSerenade just about how difficult it was though much easier being fat adapted i hear
It is definitely easier when eating high fat low carb.
Recently I have allowed myself a bit more lenience with refined sugar as there are so many Christmas related sugary treats flying around and as much as I like the results of abstaining there is pleasure to be had from letting go once in a while. It's always my aim to have a slightly more relaxed December with an ultra strict January on the horizon.
Anyway, to get to the point I have noticed that it is more difficult to fast when I have been eating refined sugar. I get hunger pangs sooner than I normally would and they are more insistent than usual. Presumably this is down to there being more insulin in the system and less leptin.
Mike put out a video recently on helpful hints to reduce weight gain and I adhere to the suggestion of having MCT oil before or during eating sugar, except I use coconut oil as in my eyes nature knows best. It works and it also means I can eat an amount of refined sugar that would normally be enough to kick me out of ketosis but it doesn't due to the oil slowing absorption and lowering insulin response.
I hope that helps somewhat. Give the fasting a go! There are great psychological benefits to be had as well as the physiological ones.
XerophSerenade thanks I'm actually looking forward to the challenge!
Pharma Industry and Government will HATE this video! I think Jason is fantastic. I only eat once a day and feel great since starting.
Kinda makes you think Jason should watch his back. Spreading the truth is dangerous.
Could you imagine if everyone in the country listened to his advice and practiced regular intermittent and prolonged fasting and other health precautions? This current garbage being promoted by big pharma, most mainstream doctors and the media would be greatly opposed. A nation of healthy, strong, resilient people would fair so much better compared to, “Just wear this mask, take this jab and shut up and don’t question anything!”
Started intermittent fasting a week ago. Already lost 6 pounds!!👊🏻🤣👊🏻....its the way to go!!
I am in day 3 of a water fast and I've lost 6# in the last two days.
Wow ... I'm jealous, I started 16:8 IF -- 5 days ago, but so far I've lost less than 1 pound... I guess its a slow process and my body prefers to hold-on-to weight. I need to lose 15 pounds of body fat, mostly from around my tummy is my preference...
After having a baby while working two jobs, I barely had time to eat more than one meal per day. Overtime I became used to it and alot of people looked at me like I was crazy. Many years later it's actually a thing. I can't seem to get enough of the science and studies behind fasting - the human body is so amazing!!! Thanks Dr Fung
I actually started doing this fasting and feel the difference. The first day is OK. Second day is a Lil rough. Third day was horrible. And the fourth was smooth sailing. Like my body understood what was happening. My mind and thinking became more clearer. It's an amazing feeling. Lost about 10 lbs already.
Naomi Perez you lost 10 pounds in 4 days or 10 days in long run once youbwere done?
Its been 7 months since you made this comment. how are you going with this intermittent fasting ? Did you honestly stick to it? If you did tell us how you feel thus far. If not please tell us why you gave it up because im seriously thinking about doing this!
Dr. Jason Fung is my go to person for weight loss info.
If you want to lose weight fast then try out this great diet plan here: HootFat. com
I have been doing one meal a day for 4 months. I eat a regular meal. I have lost 40 pounds. I have more energy. it really works.
mason smith do you do low carb also or just whatever you feel like eating
@@sadietuescher i too need answers for that
I’ll answer for him, I lost 16 lbs a month doing low cal. OMAD (500-700 less calories) I am currently 30 lbs down for the whole year, and I haven’t done low cal since February. I’m telling you guys stick with it!!!
Me too!!! I love it!!!!
Good job 👏🏻
Two nutritionists insisted I eat a snack right before bed. They both told me as a diabetic I would mess up my insulin levels and hurt myself if I fasted.
After listening to many doctors, but especially you, Dr. Fung, I have decided to try intermittent fasting. I had a bout of afib last July because I dehydrated in over 100 degrees weather twice in 3 days at outdoor concerts. In the hospital, I realized I hadn't eaten for about 30 hours and my brain fog lifted, I felt energized, and my blood glucose was not far from normal. I was shocked. I'm 63, 5'11", 350 pounds, diabetic on insulin and metformin, and I am very aware that I must behave differently or drop dead soon. You make sense. What you say makes sense and is based on good science.
I am going to buy your book(s) and do this. I know it will work.
THANK YOU!
I'm killing time watching this till I can eat again
Ari P Lol. I laugh so hard we're on the same situation. XD haha
Ari P same
:-)
:-D
Ari P Its been almost a month now, and Im already used to eatong 16/8 Fasting.
I’ve been using this. I’ve worked up to a 21-22 hour fast mostly days and have lost 63 lbs in less than a year. It’s the easiest thing I’ve ever done. I exercise on 20 hour fasts and feel great. My friend has started it and loves it too. I still have a ways to go but am confident I will reach my goals. ♥️
Colleen A really happy for you
That’s great!
Of course you will reach your goal 👏
So, what kind of diet you follow with if?
Ur not doing it right
Colleen A I started this felt great my doctor told that fasting caused my gallstones.... I stopped and with me gallbladder removed I still feel horrible... mind I’m 38 was born with no thyroid.... I’m about to start again ... I do 16:8
OMG! This is just a fantastic interview, it made so much sense I feel so great doing my keto and intermittent fasting. And I'm off my diabetes medication.
Finally, A REAL DOCTOR that really knows what he's doing !! thanks to you Dr.Fung and of course this awesome channel!!
Also Dr Mindy Pelz expert on fasting for women. Pre. Post menopause
I’m the 150 dude that’s all muscle that he was talking about. I only go on 2 day fasts to not lose weight but instead just improve my health while not fasting
ohmygosh! I'm glad the Dr. mentioned sleep disturbances like waking up in the night being so full of energy and the brain is super active. This happened to me after I started eating low carb, high fat and I had so much energy that I would wake up at 3am and my brain wanted to just think, be creative, and have all these ideas! cool!
Megan Hantz, Health Coach Many of my clients report the same increased energy! For sleep though, try mouth taping or meditating before bed.
Cheers,
Mike
Uh, i dont think waking up mid sleep is any good..
Truly we are "fearfully and wonderfully made" - Psalm 139:14
I’m 37 and discovered my weight slowly drifting up. When I got to 185 I was like NOPE! Thus I started doing HIIT three times a week. After that, OMAD. It’s easy, time-efficient, and effective. I’m one happy camper. After a few weeks, I went down to 176 and falling.
Update: now at 160 (5’11”) and being less strict.
And how are you doing today?
Never planned of losing weight but after my separation of my wife, I kind of want into a depression. Just never ate not because I wanted to, I didn't have no appetite. So I was 310 with hypertension, after about a month with no food. I weighed 280 my blood pressure was at 130/80 compared to 160/110 now after a year I'm at 170 pressure at 110/80 now I'm in control in what I eat😃
C Zilla
Happy for you!!😊
did your wife return?
Terry Bearden lmfaoo
C Zilla I’m glad you came out on top because divorce is no joke. I know guys who lost everything from a divorce including weight
Stupid is as stupid does....lol
I just love his attitude. It is like he is upset with all the morons who believe they know anything when they are simply wrong
osgiliath87 he’s upset cause the whole fucking system is setting people up to get fat, sick and dumb...ironically it is keeping him in business ...lol
I always listen to Dr. Fung when doing longer fasts. Because of the mind-body connection, it seems to make the process of fasting easier for me when I’m being reminded of how much good this does for my body with the increase in HGH and autophagy.
Fasting is one of the BEST things I am doing. LIBERATING not to have to think about food three times a day, More time, more energy, more good health, more good moods, simple to follow and can do it anywhere and anytime. Dr Fung is saving a lot of lives and life styles. he explains it so well and makes so much sense to non medical public.
Fasting is awesome! I lost all brain fog from fasting and have great mental clarity!
Daniel Marone same here man! :) its incredible :O
@@coachingleo7479 I'm so blown away I got my body exactly the way I want it. I have a body like a 20 year old again!
I have done my best math research while fasting.
keep up the good work Jason. I'm type 2 diabetic. I lost 22 pounds fasting recently got test results from my diabetic doctor. blood pressure was 120 over 76 . a1c went down 9 points my doctor almost fell out of his chair and asked me how I did this. I told him fasting and low carb high fat diet. he told me I could have extra turkey for thanksgiving and I asked could I have some cake to he said yes as long as you fast 20 hours
diabetic doctors want to keep you on meds for the rest of your life so thry wont tell u the secret the secret is drink apple cider vinegar with water
If you want to lose weight fast then try out this great diet plan here: HootFat. com
datno hi please send msg.
I have a similar story
datno hi, were u on metformin while u were fasting?
Dr Fung has been helping my husband reverse his Type 2 Diabetes! Every Saturday when we blog our Keto Journey he praises Dr Fung and his videos/books/info and help!
Does it work ? I mean your husband's condition does it get better ?
A friend of mine has been doing 3 day fasts and he looks amazing. Easily 10 years younger.
3 day fasts each week?
ThAnks to Dr. Fung and the Keto diet I am down 71 lbs in 78 days! I do a 48 hour fast 2 days a week the other days I eat one meal a day. It’s amazing!! I’m never hungry. I don’t think about food 24/7 like I used to. I am free of the addiction that I never thought was possible. I have always dieted and always failed but always felt deprived and weak when I would give into the addiction. I no longer see giving up carbs and sugar as a curse because I now see carbs and sugar as poison. My liver enzymes are normal my cholesterol is normal my triglycerides are normal and my thyroid is starting to work again. The energy and mental clarity is insane!! This SAVED MY LIFE. Thank you!
Amazing! Thanks Melonie!
Mike
High Intensity Health Thank you so much for putting this information out you are helping so many people! and please if you talk to Dr. Fung tell him I am forever grateful.
@@Highintensityhealth 48 hours fast seriously man? Don't u drink water during 48 hours? Can u plz explain how to fast? i want to lose weight but scared of losing my skin.
Can you share your IF schedule? Mon - 24, Tues - 24, Wed - 20/4, Thurs - 24, Fri - 24 , Sat - 20/4, Sun - 20/4????
“That’s because he’s stupid, not because he’s fasting”
Best sassy doctor ever 😂
Loved that part!
Ryan8583 we Canadians may be polite and friendly...but we can sass too!
I love his use of the word "stupid"! So entertaining, and gets the point across.
I like the comment of 'Slobbering idiot'. LOL
ruclips.net/video/fk9Q9w1Sj6w/видео.html&lc=z22qsn2jfqjrgfday04t1aokgrbd1cewdcr4x5k0q4fwrk0h00410.1577649964065552
You are awesome Dr. Fung!! Thank you for what you are doing!!
Dr Fung is a God sent. We are richly blessed! 🙏🏾
Hope nobody takes him out. Protect Dr fung at all costs
What a great video, I started Intermittent Fasting 9 months ago and I eat only One Meal A Day. I lost 30 pounds in the first 2 months and I have kept it off for the past 7 months. I started IF mainly because of Dr Fung's videos he is a wealth of knowledge. I posted a few videos about my transformation to do my part of spreading the word and hope to inspire others to try it.
Its been 1 week since you made this comment. how are you going with this intermittent fasting ? Did you honestly stick to it? If you did tell us how you feel thus far. If not please tell us why you gave it up because im seriously thinking about doing this!
yes, I have been eating One Meal A Day for 10 months now. I plan to eat this way for the rest of my life. I started OMAD to lose weight and I hit my goal losing 30 pounds in 2 months. I am sticking to OMAD for all the health benefits. I posted a few videos about my journey with pictures, heres the most recent one I posted 2 weeks ago. ruclips.net/video/SqvBZjaEXuY/видео.html
I hope you will find the information helpful. I gave some of my tips and things I have learned with OMAD.
Tommy Huynh do you have videos on what you eat ?
yes I just posted this video 3 weeks ago; ruclips.net/video/SqvBZjaEXuYm/видео.htmlost people are surprised at how much food I eat.
Tommy Huynh I'm eating one meal and I'm in plateau what to do
Thank you Dr. Fung for being an honest upstanding human.
You are such a great speaker Dr. Fung! You drive so much basic points, simply! So understandable! More power!
3 years old and still about the most informative show on Fasting available. I have watched this several times and will continue to. My wife says it's like my form of AA! lost 90 pounds so far and I feel 30 years younger. I've read his books but this RUclips sums them up nicely. Thank You!
I am also watching again after 3 years, you're right still good info
Great ! A down to earth Doc. that you can understand.
Thanks, Michael!
Mike
It took me 1 year to go from 196 lbs to 178, just by trying to eat less, and now in 1 month i came down to 167 with IF 20:4. So im pretty happy with the result...
eating less works. should be done steadily but the fasting craze is because it gives fast results to the people who have no patience or will power
Real boxing Fan1 you’re a troll idiot. Eating less meals doesn’t mean eating less calories. I eat 16:8 window and hit all my macros for the day. He talks about cutting calories in his book causing slowing metabolism. Get a clue moron.
Those are actually not good results at all.
Are you exercising?
@Real boxing Fan1 ,,,,
I fast one to two weeks every season. It's wonderful. Really helps with my arthritis and keeps my weight way down.
I LOVE LOVE LOVE these interviews!!! and you're a great interviewer too. The thumbnails with the different topics in the video is great so you don't have to skip through the video to find what you want, so thank youu
After failing in all attempts to lose weight, finally I got success in IF technique and i lost near about 15 pounds in three months...............Each and every word of this amazing video is absolutely true...
Did u count calories
I have been doing this for 5 weeks and found that his methods worked on me. I lost about 10 lbs which was very difficult for me and I don't get hungry. I used to crave foods, now those cravings are gone. It was very difficult the first week, but got much better the following weeks.
Did u water fast?
I have seen the thumbnail for a long time but I didn't clicked on it and I'm happy I did today. Great to have a down to earth MD sharing the knowledge from a perspective of improving health. Thanks very much!!!
I appreciate his direct style of communication, ty Dr. Fung.
I am 75 years old. Last year I did a 25-day water fast. I had no problems. I was advised to not exercise or take long walks, but to rest because one loses muscle if they do too much exercise (walking for a 1/2 mile, for example). When I was around 48, I did a 3-week water fast and walked on the beach daily, went out dancing a couple of times and felt more energetic when I was active. The only difference in this 3-week fast was that I drank Perrier water with a little lemon once a day. When I fast again, I plan to be more active, e.g. walk by the river, go to work at my part-time job as a CA (bagger) at Whole Foods (5 hours a day Mon. Thursday and 8 hours Sunday. I plan to do a 6-day fast using this protocol. I would appreciate any input.
Kathy Cromartie - thank you for weighing in. I hope you hear from others around your age who have and are doing the same as you. You sound so amazing!
My mother is your age and I would want to share this with her, but have been wary.
Unfortunately its the Food industry passing on false truths about risks of fasting. Amazingly insightful interview.
Dr. Fung makes this sound so simple, easy, and enjoyable!
I absolutely LOVE LOVE this channel. New favorite. TYSM
At least if I fast I'll save a fortune on food.
Yes!!!
Or afford a better quality of food, pasture raised!
or afford high quality vegan food. No need to eat dead animals, no amount of fasting will detox you from that.
Camellia M. I love animals... that’s why I eat them. I’m sacrificing my body by filling it with toxins so those poor animal carcasses don’t go to waste.
Thank you for caring for this earth by not letting animal flesh go to waste. I cannot stand people who exclusively eat plant based foods. People that refuse to eat meat are entitled and are the reason why this planet is dying. God bless.
Body looks at cancer cells: "Oh hey guys, let's burn this shit for energy!"
Alkaiser this was one of the best jokes I have ever read! I am visualising a comic with it! xb THANK YOU!
Julieta C its not really a joke he made, he's quoting what the doctor said....
😁😁😁😁
Wonderful, inspiring, and informative interview. Thank you!!!!
Love these types of interviews. Super informative
A very important aspect is the fact that carbs and sugars put us on a vicious craving and insulin spike cycle. On the other hand, healthy fats and oils satiate hunger and do not trigger cravings.
I just ended a 5 day fast, only drink water, green tea, and coffee. No serious issues, feel great.
I'm about to start a 5 day fast. They do a world of good. I heard one of these doctors say a 4 day water fast is all it takes to reset your whole immune system.
why 5?
autophagy is optimal on 2-3 day fast, after that you start losing muscle.
Dr.Fung advocates intermittent fasting , not complete fasting.
you should fast at most up to 2-3 days depending on your body, fastin for prolonged period of time is unhealthy.
but then again you might have your doctor's consent. so who knows what your situation is.
@@onlinename8066 You are not fully correct. Fast until you're lean. You're still burning fat and ketones. Autopaghy is still happen even though it diminishes. I'm on day 5 of another 7 day fast with Snake Juice. Search out Snake juice on youtube.
@Ayinde Mitchell
the BMR increases in lean pple maybe in the first 1-2 days (not so much in obese pple), then it starts to plummet. it goes down ~ 10-15% after 5-10 days and after 30 days to > 25%.
you start losing protein immediately - but not significantly in the first day or 2, maybe 1-3%. however after 5 days it's greater than 5%. After 10 days it's ~10%
you lose vital minerals in long fasts. that intermittent fasting replenishes
source:ruclips.net/video/_1r8ffLDFcE/видео.html
partial -day fasting(intermittent fasting) seems to have health advantages, even 2-3 day fasts seems ok .but anything over is dangerous.
@@onlinename8066 You're focused on the wrong thing bro. Go workout and build that muscle you lost. It's so tiny. People fasting are doing it for so many reasons. Weight loss/Autophagy/Skin healing/Anti-Aging/etc. So you loos a little muscle...are you going to die? No. You should educate yourself on the Snake Diet and eat it does for people. And if you want to lose weight and or get healthy, let me know. I'll help you fast. If you're scared to go past day 2 or 3, we'll just stop there and do one every week. Good talking with ya.
Best Interview I've seen for AGES, You asked all the questions I wanted to ask him. THANKYOU!
Subscribed after watching the whole video on Hormones vs Calories. Incredible details, so easy to understand. Glad that I came across this channel.👌
Went from 197 to 161 and FEEEL AMAZING!!!
Can’t wait to fast for 5 days!
Well done!
What did u do exactly?
Manny Quacioua what did u do exactly?
Manny Quacioua you'll go hyperglycaemic 😂
Manny how many days do you fast for at a time?
This video is absolutely amazing.
THANK YOU VERY MUCH DR FUNG!!!
love love love Dr Jason Fung...im addicted to his knowledge
I stopped watching other fasting related videos when I found dr jason. Lol
Brilliant video. Dr. Jason Fung is very knowledgable and trustworthy, great charisma! I've been doing it for over a year and haven't looked back since. Fat loss has bean great along with building muscle. The best part for me was that it was so east to implement. Keep up the good work!
BP WOW! No one is forcing you to fast, so no need to get aggressive or rude! It’s simple you don’t have to watch these videos, just go and eat.
@BP whats wrong with making money by giving the correct information?
Is fasting good for who has gastric ?
Does Okibetonic Secrets really work? I notice lots of people keep on talking about Okibetonic Secrets. But Im uncertain if it's good enough to lost a lot of fat.
Thank you Doctors, I'VE LEARNED A LOT TODAY LISTENING YOUR FANTASTIC, AWESOME TOPIC...👍❤
Happy Valentine's Day. Thanks again for another fantastic video! Best wishes and regards ❤️❤️❤️
This so awesome learning from these people like Dr. Jason Fung. The information is gold! Thank you so much.
This is one of the most educational videos I've watched on RUclips.
Thanks for sharing this valuable knowledge with us, man.
Yes! That part at the end, so spot on! I remember watching a documentary about food during the war, and it was noted that health was at an all time HIGH in the UK during wartime rations!!
so thankful for Dr.Fung for sharing his wealth of knowledge. Love his clear explanations. Sometimes when you watch a youtube video by a health "guru" ..you're really not 100% convinced sometimes because they're not doctors at the end of the day