OMAD Diet: What Happens to Your Body When You Fast for 23 Hours a Day? 

I'm 60 years old, was pre diabetic the doctor told me I was pretty much diabetic, 45 pounds overweight, high insulin levels making me also insulin resistant. I also have pretty bad eczema that causes severe rashes all over my body. I figured I don't have much to lose and started eating once a day on a high fat low to no carb diet. The first thing that happened was my A1C, it took a nose dive right down to the normal range (so much for diabetes). Second thing to happen was dropping weight, pounds just started coming off, I was 187 and now 142 to 145 it bounces up and down around there. The third thing that started to happen was a huge drop in my insulin levels thus beginning the reversal of my insulin resistance. The fourth thing to start happening was fat loss, went from having a big belly to now having a waist to hip ratio 0.8. The fifth thing to happen was a huge reduction in my eczema flare ups and itching I no longer use topical steroid creams. Now I combined eating once a day, a high fat very low carb diet and walking a lot of walking and these are the results of that. I am in way better physical condition now at 60 than I ever was when I was in my 40's. My doctor told me not to do it, it will make me sick, he also said I should take a statin because of high total cholesterol. I did the diet anyways and I did not take the statins or diabetes medication. He wanted to chase the symptoms, I said screw that and went after the causes which was high sugars (due to carbs) and insulin resistance (also due to carbs). Eating all day didn't help matters any either. Well that is my story and my results from eating once a day and ditching all the corporate garbage (carbs). As for big pharma they can keep their Metformin and their statins that they convince doctors to push. If I had listened to my doctor I would be on statins and diabetes medication now, I take no medications now and I'm healthy. Switching to eating once a day is the best thing I ever done. It's all about lifestyle change not medications. Edit: Shout out to Dr. Fung, I listened to what he had to say and took his advice. It's because of him that I'm not on statins or diabetes medication, it's because of him I'm healthy and no longer suffering from metabolic syndrome. Not only that, he didn't charge me a dime for the valuable information, Thanx Doc.

They always hate when somebody comes up with a free way to take their health back. Doctor Fung rocks!

Omad is the best and when you eat you enjoy the food better

FUNG is totally on it. No one can challenge his authority. He in the king! Love him 💜

Dr. Fung is a real deal I lost 30 lb in 4 months, doing OMAD and eating over 2000 cal a day, i eat everything. I just limited my carbs and cut all sugars. Drink a lot of tea, coffee and water during the day , no work out. I’m 57 years old , I have energy and stamina all day, I feel like I’m 17 again 😂. Dr. Kahn sounds like he is rep for a pharma company or a lobbyist for Sugar and low fat crap we have been eating for the last 60 years, 90% of us are overweight, 40% are pre diabetic. 43% are obese !

It makes sense to allow for the organs to rest so to divert the energy to other parts of the body to repair any and damaged cells and remove toxins. I'll listen to Dr. Fung.

I do OMAD Monday thru Friday, on the weekends I enjoy eating 2 or 3 times a day with my family and friends. I like to enjoy special days, this keeps my weight under control.

I've been doing OMAD for just over three months, along with exercising more frequently. I'm down 30lbs & feel fantastic.

My weight 127.7kg Saw multiple nutritional experts( mma , bodybuilding etc) and they all advised me to eat 6 times a day ( 3 meals 3 snacks) lost no weight and felt heavy even though I trained (mma, weights boxing). After a intolerance and a blood test and my new nutritionist looked at my hormones advised me to reduce my meals and we tested fasting, in March 2021 I began the fasting (16 /8 then 20/4 ) and not looked back I'm now down to 109Kg (Aug21) I now do once a month for 96 hours and once a month for 48 hours then revert back to 23 hours per day I feel focused and have a hell of a lot of energy and no midday or afternoon slumps. Fasting is the way forward.....

The doctor on the left - the only one giving bad info, is also the only doctor who looked bad and was aging. Jorge and Fung... as always they look great 👍🏼

The way I look at it is that our weight is a reflection of our health. Ask anyone to do OMAD, or any sort of intermittent fasting, and you will immediately notice that they will lose weight without trying or going hungry, this tells me that fasting is definitely good for your health.

Yes, you all showcased one woman who eats a gigantic meal for OMAD. Most folks will have a big meal but not a gorging meal. It might have two portions meat, 4 types low carb veggies, butter, cheese, olive oil, and a portion of a carb like a small bun or dessert. No insulin resistance (which you know because you have no driving cravings for foods). You enjoy knowing that this daily eating structure allows the body do what it’s designed to do over a 24 hr period in using new food from a meal, gathering stored carbs, and then collecting stored fat for energy rather than eating throughout the day, overloading the body with food, maintaining high insulin all day, and developing high insulin diseases. This lady lost 200 pounds!! She should be celebrated!! Great job, Dr Fung!! We all love Dr Fung!!!

People have been doing OMAD for thousands of years. The human body isn’t made to constantly be eating.

Debate all you want. The proof is in the results. Dr Fung is completely right here. I've been OMAD for a few years now. I can't remember the last time I had to see a doctor. I've honestly never been healthier.

Dr Fung is the expert here. He has changed many people’s lives

On Aug 5th of 2021. I will have 730 days of Time restricted eating, or 2 years. Averaging 21 hours a day. Working out daily with weights and cardio and finishing it off with a 20 minute sauna session. I'm 71 and can do anything I did in my 30s. Probably the most important thing I have learned on this journey? Eat REAL food. If it comes in a package, jar or can stay away from it. Process food is a killer. The food manufacturers of today are the cigarette companies of the 1960s. The standard American diet kills you slowly.

Doc on the left said he promotes eating fruits and grains. I've been eating fruits and grains for 40 years; I was diagnosed with fatty liver. Very low carb for me from now on, plus fasting.

Im doing OMAD but im not Keto, I eat what I want, as little or as much as I want for one meal and I drink coffee all day long with milk. I'm losing weight and my blood pressure is coming down and my cholesterol has improved

I do intermittent fasting and low carbs for 2months and 7 days and i lost 9kilograms,i undergone blood chemistry and im happy to see the results with normal cholesterol level,normal sugar andnormal BP,amazing and i will still continously practice it.

I would take Dr. Fung any day as my doctor. He's been doing this a long time and has helped Soooo many people.

I've been on the one meal a day diet before. Coz I could only afford to eat one meal a day. For breakfast I used to have a breath of fresh air, for lunch I had a cup of tea. I lost a lot of weight within maybe two months.

Dr Fung is the best 👌 👍🏽 I have lost 60lbs and maintained it for a while through IF.

6’5” 259 with high blood pressure. And f ‘up blood sugar. Got on the Keto diet lost weight. But I ate all day no carbs and all protein . Once I went to OMAD eating from 11 am to 5 pm. Everyday mostly the best food I could afford. With lots of water. And still ate a few snack a day. Lost 30 lbs in 5 months. You can fast for 18 hours. Eat. Then eat another meal before sundown. Trust me your body will love you back. Honor they organs.

He must be funded by the FDA lol

I'm not fat at all and on IF (and I love it), wanna try OMAD to make it simple. Comments here are truly impressive. Those high carbs and eating whole day literally can kill you.

Dr fung gets results from his methods. The other two have theories.

OMAD is the Only solution for me. I can discipline myself to eat 1x per day...but I cannot maintain a long term low calorie intake by eating fruit and vegetables and smaller portions...I always gravitate back to junk food. I am not saying OMAD is the best way to go, but I believe, OMAD is the best way for me.

There’s a RU-vid video that mentions a woman age 100+ who has eaten OMAD since she was 21. She attributes her longevity to eating OMAD.

Cole Robinson was tarred and feathered on this show. Fasting has a ton of benefits, no matter what method you choose.

So I’ve been doing this for probably 14 years and I’m in excellent health…I have all My bloodwork checked yearly and it’s wonderful, they can’t get money if you don’t have diabetes or a cancer

Yay dr FUNG!!!!!!!🎉 PUTTING IT STRAIGHT

I’m not gonna listen to people that want to keep people sick and never tried the diet🤷🏻‍♂️, I’ve seen nothing but good results from that do the OMAD diet!

I'm 36 hours into a fast right now! Feel good 👍😊

The food industry must defend the standard American diet

Dr. Fung seemed to make the most solid argument. Dr. Kahn seems to think talking the fastest and most assertive makes his argument the most accurate, but I would select Dr. Fung as my doctor.

I have been following OMAD for 3 months. Lost 40 lbs, food tastes better and I feel amazing. I am doing it for life.

I love OMAD cause it's cheap. cuts your food bill by at least 50% .

Dr Fung is the big boss here.

Why does Dr Kahn feel the need to wear a stethoscope for a TV interview?

Just started today 485 pounds Wish me luck I do this or die young

Fung never says to “eat 2000 calories in one sitting.” He never says to “gorge.” This interview is absurd.

It's crazy. I started doing prolonged fasts and it is amazing how quickly my appetite changed. I crave clean food and I eat far less. I feel better walking around in a fasted state. I spent my entire life in fed state. I just feel better

Kahn is a vegan who promotes his Longevity Center and vegan books...He will never diverge from that money maker

OMAD has alleviated my menopausal and autoimmune symptoms and Dr.Fung has been a Godsend💯🙏

I’ve been doing OMAD for almost 8 months and I have significantly lost weight + lifting. 282lbs. down to 218lbs. I feel energized, mental clarity, revived and stronger. Food tastes way better every time I eat. It’s like my reward/ritual for the accomplishments I made that day.

So Dr. Joel Kahn, what if you don't gorge and actually just eat a normal meal? Then you're liver and everything will operate fine, and all of those negatives you listed don't matter anymore. It seems like you want to object to the worst-case scenario as a strawman in order to write the entire OMAD approach off altogether without addressing other ways to do OMAD. Doctor, you're not going to be unhealthy eating a serving of meat or fish and a side of vegetables with some eggs or seeds every day once a day. It is laughable that you think that. And recommending grains to people is just stupid. The "literature" as you call it tells us they are not very good for us. They make us fat, cause inflammation, have a high glycemic index value, and there's not exactly a lot of nutrition in them compared to better foods. It's pretty silly that you would recommend grains when they have been shown to be some of the worst shit we can eat.

I did what Dr Fung suggested. In one month I have lost 14 pounds, more than halved my diabetes medication and maintained low blood sugar. I hope to be medication free next month. I've never felt better. More energy than I can use and thinking better. No brain fog. It's easy to do and easy to maintain. Thank you Dr Fung.

Jason Fung is correct. I had tumors everywhere. I fasted for 2 years. I am tumor free and 1 year after I am still tumor free. I listened to Jason, and it changed my health and my life.

I've been taking Dr. Fung's advice and not only am I no longer a diabetic, I am off all heart meds and have steadily lost weight. I am over 65 and have more energy now too. Not having to spend money on any medication saves lots of money. Don't care what other docs say, my health is better today than it was before I started doing what Dr. Fung says.

I have been diagnosed with fatty liver and it hurt after each meal, until I switched over to OMAD. Obesity and Diabetes 2 is the new Killer. OMAD or 2MAD is an effective treatment.

Omad has changed my life and has given me a ton of energy , I work out twice a day and don’t restrict what I eat during omad ,

Dr fung is clearly the most intelligent doctor there and everything he says makes total sense

i lost 60 lbs in 3.5 months with omad,I don’t have to restrict myself, my digestive system gets a break, I’m saving a lot of money, etc.

Down 40 pounds in five months 🎉

🤠 I started OMAD over 5 years ago and lost over 60 pounds.

I lost 11 kg in one month by doing Omad😊 Edit* 87-74 in two months and now I am at 78 because I stopped the diet and eat what ever I want

The benefits of this diet were -and still are- huge in my life. I don't do strict IF anymore, I try to eat healthy-ish, every now and then do a 24 fast BUT to this day, 2 years after partially quitting a really strict Intermitent Fasting diet, I simply CANNOT have dinner anymore. I simply don't get hungry at night anymore. Before my IF bout I always ate something at night, for 30-something years. These are the real and lasting lifestyle changes that this diet introduces in your life. I simply cannot understand how I used to eat 3 times a day; how my body had the ability to *actually* GORGE 3 times a day like some depraved animal.

OMAD is like a free gastric sleeve operation

Fung is the authority and pioneer on this. The other two seem to be indoctrinated.

I'm 61 and started intermittent fasting and low carb high animal fat diet 3 years ago. I'm on OMAD for about 3 months. My BP dropped from 160/95 to a consistent 110/70. I also stopped all my asthma medication ( though I still carry them with me). My joints pain has disappeared. I can run a half marathon which I could never do even in my younger days. I feel stronger and way much healthier. Thank you Dr Fung, you actually saved me.

We can eat meat and vegetables once every 24 hours. Just make sure you are doing some kind of moderate exercise and you will never be sick and fat. The reason why people are always sick and tired as well as fat is because they eat entirely too much sugar and processed carbohydrates. If you eat junk food once a month or every other week you will automatically see a difference after eating whole foods that are not processed. Overdoing vegetables and fruit is just as bad as over doing fat and protein. If you are fat prioritize your protein intake (eat 1 gram of protein per lb you want to be) if you are weightlifting eating 1.5g of protein per lb of body weight. I personally watched my health improve in 2017 when I started doing this kind of diet didn't know what keto was or carnivore diet was. I just started fasting longer periods and eating less and less fat and sugar. I don't care who you are you can't over eat protein. I dare you to try eating steaks or beef and see how much you can stomach before you get sick (hit the wall) I incorporate leafy greens and some vegetables all low glycemic foods. No sugar or processed carbohydrates at all. I have fruit once a week and it's on days I run for the booster effect they give me. Since 2017 I went from a chubby 270lbs guy who had some muscle mass at around 29% body fat to what I am today a solid 190lbs 17% body fat sometimes I hit 13% depending on the seasonal changes. Winter I tend to pack on some fat and by summer I am back down to around 13%. I'm feeling great doctor tells me to keep doing what I'm doing. I don't crave anything. I do caesthetics because of the virus and my places to workout have been on lockdown or limited to half capacity. The good old pushups, pullups, situps, dips, and burpee's. The walking and running around 10miles a day is great too.

I fast for 20 hours a day for the past 6 days now and I feel better, not tired all the time. The first 3 days was hard but a little patience will take you to the right path.

I lost 200lbs fasting. It been 3yrs now and I kicked it up 23hr and eat 1 hr the OMAD I feel so amazing fasting and I am doing this for the rest of my life...

i’ve been doing OMAD for long time snd i feel stronger and better and i eat everyday around 2 or 3 pm that’s my only one meal a day good luck guys

remember that fasting is the secret they dont want you to know about so of course some "doctors" are going to try and tell you to not fast because it means doctors make less money because you are seeing them less from being so healthy. Jason Feung is the smartest person in this video and knows exactly what hes talking about, hes been studying fasting for a very long time. I did intermittent fasting for an enitre year and lost 100 pounds and became healthier that I have been my entire life. I have normal blood pressure and got told by my doctor that I'm no longer diabetic. My LDL cholesterol levels were perfect as well. I am also no longer suffering from hypertension.

I find it AMAZING that this is "in vogue" nowadays... I've been "OMAD" my ENTIRE LIFE. At least since I was 12 y/o. Not because I even knew what I was doing but because I felt that was the correct way to eat. Maybe thats why I've NEVER been overweight and in fact, I've been "ripped" ever since I hit puberty. Or even before that.

It's an AMAZING way to live. I have been on OMAD for 3 years now and it's the easiest way to eat and maintain or lose weight. No restrictions, no counting calories or macros. That is all a waste of time because everyone will fall off because the cravings will come eventually. You don't have to worry about any of that. I can eat pizza, burgers, chocolate cake, whatever. I work out 5-6 days a week and just LIVE. I can go out with friends or family and eat with them and enjoy the evening. These restrictive diets out there put your life in a prison and most importantly they do NOT work long-term. Supplement with a high quality whole food organic vitamin and eat whatever the hell you want ONCE A DAY. No one is eating 2000 calories every single day and that is because it's very hard to eat that many calories in one sitting and by using the word "gorge" he is trying to form a mental picture of someone just stuffing food in their mouth until they are so full they can't move. That does NOT HAPPEN ON OMAD. Ever. FUNG is the only guy up there worth any trust. That idiot on the left is so full of crap it's almost funny. No one is developing insulin resistance eating once a day unless they are literally ONLY eating candy and desserts for their meal and if that is the case you're a moron anyways. Just remember - these "doctors" are the same one's pushing the same old incorrect pyramid diet and oh let's not forget unapproved vaccines. They hate it when the "little guy" gets information that puts the power in their hands to heal themselves.

I was 115kg, now 102 kg, lost 13 kg in six weeks by doing OMAD and low carb diet. inspired by Dr Fung. I do not gobble much during OMAD meal because low carb diet does not taste good. Hahaha

You can read studies till your eyes bleed. Just try it If it works keep doing it.

I tried a mixed diet of omad and keto for just under 3 weeks and lost 28lbs. Yes the cravings were relentless for the first 3ish days but once I powered through and got over it the benefits were hard to ignore. I didn't feel sluggish, had more energy, felt mentally positive, better bowel movements and it had gotten rid of 99% of my psoriasis.

Fasting goes back to over 1000 years. If u look at war times, people in the west were healthier, due to food shortage. The Muslims & Asians been fasting for Centuries.

Here’s a thought…instead of listening to everyone…try it!!! See if it works for you.

Dr Kahn shouldn't be on this panel

I eat once a day. I feed my dog once a day. We're both doing pretty good.

Dr Kahn and the Food industries must be good buddies by the sound of it. And those people who followed his advice will one day end up in his clinic.

God bless you Dr. Jason Fung, everything you said is right on. Thanks Doc ❤️

OMAD is life changing............ spending less on food,,,,,,,,,,,,, no hunger,,,,,,,,,,,,,,, less cooking,,,,,,,,,,,,,, more energy,,,,,,,,,,,,,, no s&sx of diabetes,,,,,,,,,,, no fatty liver pain,,,,,,,,,, better sleep,,,,,,,,,,,,,, less weight,,,,,,,,,,, no doctor's appointment,,,,,,,,,,,,

I have been doing intermittent fasting and have lost 10 pounds. Before trying this way of life, I could never lose weight. I do not gorge when I eat. I eat mostly veggies, protein and fruit. I also cut out soda and most processed foods. I eat until I am full. I feel great and have a lot of energy. I also exercise.

Dr Jason Fung owned him.

OMAD does not make any money for traditionalist doctors. Congrats, to Fung for telling the truth and not being as rude as the older doctor.

Lost 10 pounds in in 8 days on omad diet. I am 400 lbs i need to lose 200 pound

Fasting is free and that’s the real problem. Dr Fung, Dr Berry, Dr Cywes, and colleagues have changed my life. Cut the crap, eat real food, fast between meals. Kraft, Pepsi, Nestle, Quaker, Kellogg’s paid big $ to convince you and your doctors to eat 6-10 times a day starting with a bowl of cereal.

Our ancestors did not live to 35! Ahh I'm so tired of hearing this. If you made it through childhood you lived into your 70s.

My OMAD results - Day 1 - 80kg (10-11-23) Day 7 - 76kg (17-11-23) Day 14 - 74kg (27-11-23) I'll update of my OMAD journey every week here. If you want to see my journey video then search 'The Unfit Dad Omad Journey)

I'm at day 5 of OMAD and I feel I've crossed a threshold today. I'm not hungry. That persistent urge to snack has been tamed. I just eat a normal supper and that's it. I feel pretty good, though the first 4 days were a bit of a challenge as my old snacking habits kept rising up demanding attention. But I ignored them. I don't know if this will work for everyone, but I decided to give it a shot and so far it's working for me. I think Dr. Fung is definitely on the right track here.

Dr Khan is a quack!! I have never been so healthy and had more energy than I have now following Dr. Fong and Eric Berg.

Go Fung!

Fasting has been written about for thousands of years...It is not a fad. Almost certainly our ancesrors did not eat all the time..Oh wait there is no money in health....I fast 23 hours a day and eat for 1 hour....I have reversed all my ailments ...some of them serious..very serious..you wan to heal your body...FAST...

My mother had been suffering from hyperlipidemia for almost 10 years, no modern medicine could help her, but then fasting came, she freed out of hyperlipidemia in just ten days of 16-8 fasting.

Dr. Kahn's appearance is the best counter to his own argument. Dr. Fung looks young and energetic. Kahn looks like a vampire that hasn't fed in a while.

I started at 285 my heaviest. Eased into it and started doing this everyday. I sit at 185 lbs now. I workout 4 days a week and take supplements along with 16/8 eating window. Started 16/8 so i can gain muscle. The OMAD diet seriously changed my life though. Did it for 7 months.

A Holistic Cardiologist sounds just like a Naturopath. I'm 56 and have been doing OMAD for over 4 years including the occasional 2 to 3 day water fast and am healthier than ever. I don't let food control me anymore. I control the food.

Why is Dr Kahn wearing a stethescope and in front of a wall of ego show and tell? LMAO I respect Dr Fung here, he brought the reciepts , is grounded in FREAKING PEER REVIEWED SCIENCE..and guess what? didn't need a freaking stethescope to hypnotize the audience with. He educates. That's the difference; don't exploit the audience with gimmicks - educate them!!!

I have been practicing omad for about 1 year, with a first attempt which took me from 87 to 77k, then I stopped and I stagnated then I took up omad again and fell to 71 before Christmas or I struggled to resume this diet. Finally since the beginning of the year I went to 66 then now 61 kilos, besides I do body weight and cardio (jogging, high), I started omad to lose weight but it's now a mode of life 👍

Why most doctors don't like fasting is because fasting benefits and keeps people healthy both mentally and physically. If people remain healthy and they don't fall ill, how will doctors earn their money? Doctors earn only because we fall ill. Same with those who are telling to people to diet for losing weight. The dietitians make money because people diet. But if people started to do fasting, the dieticians will have to close their shops. That's why most if not all doctors and dieticians have problem with fasting. Fasting won't make them money right. So then they think hey let's tell people that fasting is unhealthy, dieting is healthy. Those who understand this simple thing will never listen to these dieticians, doctors and fitness coaches. Eat once a day and fast that's enough to keep you healthy. Fasting doesn't profit the doctors and dieticians that's why they will always try to tell people that it's unhealthy to fast and healthy to diet.

I know more about health and nutrition than “Dr.” Khan. These so called “Doctors” get upset when people educate themselves and work their own way back to good health rather than taking dangerous drugs.

I’ve been doing intermittent fasting since 2017 and got my health back cleared my eczema all the way lost weight and I feel better than ever. Doctors against fasting are just mad because all the pills they give to keep you sick won’t be working when you unlock health through fasting.

I’ve been doing omad for a week and I lost 5 pounds. I’m a vegan. I drink what ever I want until my meal is done then I drink water for the whole day.

Everything is soooo confusing. I think that's almost the goal. Do this. Do that. Don't do this. Don't do that. I think this is why most people just eat whatever the heck they want.

I’m on 16/8, planning OMAD. No snacking, not hungry, no joint pain, increased energy, increased time to myself, spending way less on groceries. Healthy food tastes so good and I don’t crave bad food anymore!