I am 5 10. I was 223 lbs. I fasted 3 days a week for 22 hours and ate one long very large meal on fast days. around 3000 calories. I GAINED muscle without working out and lost fat. I went down to 193 in six months and my waist went down 3 inches. I was never hungry. Fasting is awesome.

@InvestorAcademyPodca

6 жыл бұрын

He defined fasting as going longer than 48 hours without food.

@patriciabourgeois8348

6 жыл бұрын

BUT you lost 5LB's per month which could have been achieved with exercise and proper diet. Why do we look for answers in extreme behaviour when it is this kind of behaviour that has got us to the point where starving oneself for 7plus days sounds like an option.

@marinero7713

6 жыл бұрын

Patricia Bourgeois, what do you consider a “proper diet”? Do you mean the typical, low calorie diet that has been failing for decades? If that diet worked, would there be a huge diet industry to give people the constant hope that “This time, it will work”? Why is fasting “extreme behavior”? Do you think early man sat down to eat three meals a day? Maybe eating 3x a day is the extreme behavior. Don’t most religions call for a period of fasting? Do you know that the ancient Greeks practiced fasting for its many benefits? All throughout history, fasting has been a part of life. It’s only now that it’s suddenly regarded as extreme behavior.

@kimberlycooper4170

6 жыл бұрын

Patricia Bourgeois , fasting stops the hunger feeling. When I fast, I eat breakfast and lunch the day before fasting. I don't eat any food or drink any caloric beverage after that lunch. Then, I go to bed early and sleep through any hunger feelings. When I get up in the morning, I drink water, green tea, or white tea with no sugars or artificial sweeteners until the fast is over. I feel no hunger. However if I reduce calories at every meal, hunger gnaws in my stomach all day long. Fasting is a lot easier than reducing calories at each meal.

@JoshuaJadeMcCoskrie

6 жыл бұрын

Patricia Bourgeois "Proper diet" "starving" Really nice wordplay Patricia. And you demean someone's weight loss and health improvements to boot. I'm sure you're great at parties. 1/10 - I'm 100% sure you've never tried fasting in your life. Not even for 16 hours.

I recently read one of Fung's books. He said something like you don't lose muscle mass because you fast, you lose it because you don't exercise it. I think he points to a study where some resistance training was involved. What's that thing called where two sides have a position and do everything to fit their own heavily invested views? I think Phinney and Fung ought to get together over a glass of dry white wine and be more open to each others ideas.

@kquitberg4297

5 жыл бұрын

Confirmation bias. Agreed

@victorsilvafernandes

4 жыл бұрын

I totally agree with you! Except for the wine...I do prefer the red wine :)

@aldon78

3 жыл бұрын

I do agree with Fung, mankind survived without having to eat every day. I have increased body mass and testosterone at 61 more than I was younger so fasting is working here. The thing is that you probably dont want to fast every day for a whole year.

@nataliajimenez1870

Жыл бұрын

​@@aldon78 What Phinney shows is that fasts longer than 48 hrs should be avoided as much as possible because the metabolic rate starts going down and the body starts breaking down protein, that electrolytes must be consumed during fasts. Fung shows that doing exercise, particularly resistance training, helps to maintain muscle mass. Breaking a fast must be done carefully, so people don't go into bingeing and starvation cycles. Fasting is a tool that must be used carefully

I have been on keto OMAD for 8 months and i kept increasing my calorie intake unconsciously from an average of 2000 to more than 3000 and i didn t experience any kind of weight gain. (Also did 3 Times 7 days fasts)

I was listening to this to see what's new then the alarm went off when he starts using the Biggest looser example. What the heck!!! That High Carb, Low Fat, extreme exercise practice has got nothing to do with Fasting. Yet he using it as example of how fasting effecting your metabolism?? If anything Dr Fung already explains all these claims by This guy in his many videos. The data this Dr uses are never explained properly or telling us the background & subjects used. If you're using a lean group of people of course you're gonna lost some lean mass compare to the fat ones. And what's wrong with the body recycling the old protein - isn't that autophagy is all about? As Dr Fung said our body is NOT STUPID to store fat as firewood for rainy days but when it needed energy burns a much needed muscles that vitals to find foods instead. And he has experience helps thousands of patients to reverse diabetes & obesity with fasting programs. How many patients or real experience this Dr have himself about fasting as a cure other than reading bias data??? With proper medical supervision a long fast can be a very powerful tool and have been used for centuries. Talking about bias & cognitive dissonance. And so many illogical things he said here that makes me think he's really out to discredit Dr Fung's work. What other data he might be miss uses to represent his speech again then?? I think I will never take this guy advice seriously ever again 😠🙄

@dongrant810

6 жыл бұрын

Exactly, if it dosen't make sense there is a buck in it!

@Birdieblogger

5 жыл бұрын

Probably being padded by big pharma to keep everyone on the med train

I absolutely love you Dr. Phinney, but I'm going to side with my own results and Dr. Jason Fung on this...

@dealwolfstriked272

5 жыл бұрын

Fung states that when you enter a fasted state after a set amount of time your RMR reverts back to normal.After watching too many Fung videos I have come to understand that one must do alternate day fasts to reap this RMR reset when at low calorie.I was doing 1200 calorie OMAD for a week and lost not a single pound so....

@WestieKatie

5 жыл бұрын

Same.

@dealwolfstriked272

5 жыл бұрын

More thoughts on this.....you can also just eat low calorie and wait for the whoosh effect.Slower by far but easier to live as your not starving yourself every other day.

@stevengraff8687

5 жыл бұрын

Might we ask what was the makeup of macronutrients of the OMAD? If you were eating a standard American diet (SAD) your 1200 calories would have been high in carbs and protein spiking insulin production resulting in a hormone state that signals your body to store fat (weight). OMAD on its own does very little for me in the way of weight loss, but it has been useful in preventing regain and improving my metabolic state, liver panels, and other health indicators. Currently, I am mixing up IF, multi-day and extended fasting periods with LCHF eating and have lost 46 lbs since Nov.2018. My fasting days are not 500 kcal as in the studies Dr. Phiney references but in the 0-50 calorie range due to coffee and/or bone broth (500 kCal is not fasting, it is a CRD). Five day periods of re-feeding on LCHF have not resulted in yoyo weight gain, and returning to a fasted state is near effortless. I am mixing up the fasting protocols in an effort to avoid homeostasis and plateauing of weight loss.@@dealwolfstriked272

@kukolino

5 жыл бұрын

@@stevengraff8687 I'm doing the exact same thing, switching between different types of fasting ! I lost 27 lbs since Jan 2 2019 !

Thanks doc, but I’ll stick with the incredible results of fasting on my mood, energy levels, muscle maintenance, and fat loss.

@ChopStixLoL

3 жыл бұрын

I don't think he's saying not to fast just that he explains the risks. That's why it's a "double-sided" sword . If you can use a double-sided sword, you are a deadly warrior.

Dr. Phinney needs to watch the documentary "Science of Fasting". Germany and other countries have done a lot of research on fasting. Russia did a little of fasting during the Cold War years. Most of that research remains untranslated in Russian.

Conclusion from personal experience, fasting is a tool to calorie restrict , and just like any other weight loss mechanism , one hits plateau and that leads to stricter fasting regimen, which is lower and lower caloric restriction. This creates metabolic damage , weight gain even at maintenance and weight loss difficulty even at cal deficit. I’m glad someone like dr Phinney is bringing countering ideas on IF and longer period fasting to balance all the much hype. Would be glad to see more though studies , as well as gender specific ones. I think studies on both sides of the argument should be encouraged without bias for our greater knowledge,understanding and application.

Thank you Dr. Phinney. I lost 50 pounds mainly alternate day fasting. But once I got leaner than I have ever been in my adult life, I could only do OMAD and was beginning to start regaining at my meals size to satiety. I assumed my basal metabolic rate was impaired. So I decided to do add strength training; specifically H.I.T. 2 times per week. I have been at this for about 6 weeks and my weight has come up a bit from my low point but my waist size has been stable. I track my waist size now. Yes, you may need strength training to "rehabilate" your metabolism (increase lean body mass) after fat loss using fasting. Yes, I can never go back to 3 meals a day. My one meal a day is large. On strength training days I do eat eggs before, and then have my meal right after so those days are 2 meals.

@mazkebar

2 жыл бұрын

Very well stated and explained. Would u mind providing an update on ur lifestyle routine…?!

17:01 So when you have a disease where the body produces too much insulin due to insulin resistance (T2 Diabetes) and you adopt a diet that naturally corrects this problem you have issues if you take drugs that artificially manipulate insulin in the body? That really shouldn’t be a surprise to anyone and is not an argument against fasting.

@GrifoStelle

2 жыл бұрын

16:50 You don't take the medicine while fasting. There were still the usual issues despite the 'diet that naturally corrects' T2 diabetes. *edit. Fasting without medicine increased the risk of symptomatic events.

The people in the Big Loser did not fast...they did reduction of calories, which Dr. Fung proved puts you in starvation mode and you burn your muscle.

@jillcarlton3265

5 жыл бұрын

blue river, unfortunately when you go into "starvation mode" you wind up gaining the weight back, and more. More often than not. It's the mindset that makes the difference, 16:8 or 18:6 intermittent fasting is often a way of life, and you don't put the weight back on without the intent to do so.

Dramatic calorie restriction plus heavy exercise (arguably to over-training levels) are two relevant elements in the metabolic issues of the participants of The Biggest Loser that were studied.

There is no reason not to take minerals while you are fasting. Put some salt in you water. Supplement with magnesium. That doesn't break your fast. Be sure you eat a lot of potassium rich foods before you start. And there is no reason to fast for more than three days, since you will get a nice boost in autophagy during that time.

I was a fasting fan. I started to do OMAD (one meal a day). I did couple of 36 hours after initial keto adaptation. I got to agree with Dr Phinney. In my case, my ketones hit "starvation" levels very quickly, with lowest of 4.7 and as high as 6.2, despite eating normal amount of calories (and carb was 5 to 20gr). I was extatic. knowing that I hit "therapeutic" range with very low glucose in the 60s. But all the magnesium and sodium in the world could not help my horrible side effects...lethargic, sick, bad leg cramps. Now back to 2 meals of keto, no fasting, and I am back to my amazing energy self. Fasting ketosis *can* be an issue for folks like me who are probably not too insulin resistent I guess

@johnbrady6666

3 жыл бұрын

Potassium??

@fatrick9001

3 жыл бұрын

@@johnbrady6666 Lol we're two years late but that's a good point, it's rather conspicuous Julieta didn't mention potassium.

@sylviaking8866

Жыл бұрын

Don't forget Potassium. That is also vital. You need a lot if you fast. I don't fast often and stick to 24 hour ones once in a while.

In my descent from 258 to 184 pounds, the most I've actually done is go down to one meal a day; so I am not a fasting fanatic. Possibly it is better to use shorter fasts like what Dr Fung from the "Diabetes Code" book recommends. But, correct me if I am wrong, but the Biggest Loser study was not a fasting study, but caloric restriction; fasting, which from my reading does not affect metabolism as much. For lean body mass loss: we definitely want to lose some, otherwise our skin would be too loose and flappy. When I think of "total fasting" I still drink water with apple cider vinegar and sea salt, in order to keep my sodium up. And I still take all my whole food vitamins, minerals, and magnesium. .. carnitine, CoQ10 ..etc Not related to me, since I was not on any diabetes meds. But, it seems like a study showing higher risk of hypoglycemia for people on meds, would be an indictment of the supervising doctors who failed to monitor the blood sugar levels properly. On the slippery slope segment, I don't think I could get addicted to fasting and want to do it more and more. I like to eat actually. Recent study / video on this topic: kzread.info/dash/bejne/e3pmj6-qeaq6kdI.html

Amazing talk - short, concise, full of data and scientific references. Excellent job, Dr.Phinney!

Dr. Phinney isn't contradicting anything Dr. Fung says. Dr. Fung says that fasting longer than 3 to 5 days should be done under a Doctor's care because of the adverse effects.

He's comparing apples and watermelons. Fasting lean athletes and fat couch potatoes are two very different things.

I grew up poor, I fasted often because there was no food. Besides keeping a lean figure I can't think of anything harmful from it. If this guy is right my mobilising of food stuff should be zero... However I'm built like a Mac Truck not at all soft and gushy....

There's an important thing to keep in mind. (not that it's the whole story) it's natural for your metabolic rate to drop as you lose weight. Someone who is obese by default has a very high metabolic rate compared to a thinner person. So it's expected for the metabolic rate to drop as the subject loses weight. I'm not sure how the metabolic rate changes in people who lose weight in comparison to people who lose weight BY fasting.

I'm on a Keto, 24h dry fast every day, OMAD. Feel great, lots of energy, mental focus, skin is so smooth and healthy. I recommend it.

@NameGame446

2 жыл бұрын

Are you still on that? If so how do you feel?

@user-bj9or7ke3u

2 жыл бұрын

@@NameGame446 they dont last

@nataliajimenez1870

Жыл бұрын

​@@user-bj9or7ke3u Some people can go for years doing OMAD, but many, particularly women, can't eat enough protein in one sitting to do OMAD and they are better off with 2 or 3 meals a day. As long as they are very low carb meals and have some fat, they won't raise the insulin levels much, and they would be able to get an appropriate level of nutrients. Also the liver can only process so much protein at a time, and the rest is converted into sugar. Dividing the proteins into several meals would allow more protein to be absorbed and less glucose to be produced

I'm fasting now, and my goal is to reduce my BMR so that I don't have to eat so many goddamn calories to grow muscle. So, I should continue total fasting, and avoid eating any protein at all (5:15). High metabolism is just faster death, after all. Why would anyone think a fast metabolism is good? (Because they mistakenly think you'll stay lean with a high metabolism.)

The first time I did a 30 hr fast 3 months after starting Keto, my face broke out severely - for almost 3 weeks & very sensitive. Several weeks later I did a 48 hr fast and my face broke out again but less severe. I can only assume this is an inflammatory response from toxin release from stored fat during autophagy. After the 1st fast, I woke up with my eyes & face having fallen on the left side with new wrinkles. My eyes were swollen and I looked like a lion. At the 2nd fast same thing only my eyes were swollen almost shut but I recovered faster. Since then I have noticed that my rosacea has improved as well as my skin (liver spots fading). I would love to know if others have experienced this inflammatory response after fasting. I have metabolic syndrome, fatty liver, insulin resistance, etc., etc.

Dr Phinney is swimming against the stream on this one. Lots of good new science in favor of fasting. I'd love to see a real debate.

@patrickproctor3462

4 жыл бұрын

He IS right on the refeeding syndrome part though, which is way too often ignored in the discussions. It's definitely a good idea to drink some salt water with cream of tartar and take a magnesium supplement an hour before breaking a long fast with free range chicken or turkey (phosphorus) over some rice or quinoa. I live in a family of cooks, so fasting long periods for me is pretty hard to pull off with all the great smells wafting up the stairs, but it's worth it when done right.

@Amy.Scorpio

3 жыл бұрын

True, also found it weird when he criticizes fasting by using prolonged fasts (days, vs the popular intermittent fasting methods) as an example for his study

@stevejones8090

2 жыл бұрын

@@patrickproctor3462 why would you want to eat rice? your body has been living off fat (and muscle), and rice is full of carbs....no thanks, i think you should break it with just a little bit of fat, as that's what the body is used to, then slowly work from there

1. Biggest looser contestants. Not fasting. Low calorie diet and training. Lowered BMR. The only ones who didnt drop BMR are the ones doing by gastric bypass surgery which effects are similar to fasting. Phinney didn't mention or missed that. 2. Fung said when measuring muscle mass...measure muscle mass and not urea. If Phinneys claimed 1/2 lean mass loss per day was true, me and many others would consist of pure fat. I don't. My muscle mass is the same. 3. The muscle mass loss fear does not fit with evolution of any mammal. Why burn heart and biceps when there is fat? : )

@80kokoro

5 жыл бұрын

Exactly. The body is not that stupid. It is designed to store fat as fuel for times of famine. What would be the point of burning up all the muscle mass then when there is plenty of fat stored away? Does not make any sense.

@Isuri

3 жыл бұрын

Pretty sure the proteins the body burns is your proteins that are 'gunk' and ready to be turned over, including cells of your immune system

@GrifoStelle

2 жыл бұрын

I hope you all are still alive. 18:25. Notice the last point. Starvation is marked by Severe loss of lean muscle despite remaining fat stores. In true water-only starvation: An athlete will out live an average person. Average will out live the obese The obese will die sooner and at a higher weight than any of them. Without any food or suppliments at all no matter body fat, you live 8-12 weeks at most. Depending on how much muscle you have to sacrifice. Amino Acid is why. Your brain needs more than fat and ketones, it needs amino acids to produce neurotransmitters- over 100 kinds of amino acids. Some of the essential amino acids come from the breakdown of protine. If you are on a water fast it will pull that life-essential Acid from your muscle and eventually your vital organs. Why? It's an effort to keep your brain and involuntary mechanisms going while keeping you at least mobile enough to crawl to edible moss and tree bark. Your brain function trumps every other function. *It doesn't want you pretty. It wants you alive.* Feed your brain. *Or it will harvest your body.* 😅

@GrifoStelle

2 жыл бұрын

13:25 This isn't difficult. He didn't claim the 1/4lb numerous studies do. One interesting study involved lab rats born and raised together with 100% identical diets. Raised to young adults. Half were then killed and all of their lean muscle was physically removed weighed, laid in a relaxed position and frozen. The other half were starved for 48 hours (prolonged fasting for rats) then they were killed in the same manner as their siblings. The muscle mass lost was simmilar pound to pound to that experienced by people undergoing starvation. Just keep weight training and keep your protine and Amino Acid intake maxed out to reduce muscle loss. You wont lose that much if you put something else on the altar. Or keep your fasts under 5 days and pack in your muscle savers.

All the points Phinney is making is true for people who are not LC/Keto. So 99% of the people. But presenting such info one the LowCarb DownUnder Conference without the hint, that it could be totally different for a person, who lives LC/Keto is "strange". And even stranger is the fact, that Phinney does not reflect such most obvious flaws. Mike Mutzel said in one of his latest talks, that this year there will be studies available, which show exaktly that is it a big difference if you are "keto" or a normal person on the SAD. I am looking forward to it!

Adding mineral supplements to a fast is really easy!

Very hard to fault anything of Dr. Phinney's work. One of my favourite LC scientists. Great stuff.

This is a really well done and tempered seminar. That said, I would dispute some things. The primary one is: "Permanent metabolic damage" is not something I believe exists. There are many of us who have gained and lost 20 pounds over several cycles - many of us who have fastest for a very long time, dropped our metabolic rate, and yet it always recovers. I have over 8 years of spreadsheet data using myself as a science subject and without fail, metabolism will bounce back. I would argue that it is directly proportional to how it was lost. You use the biggest loser data, but I would argue that data is not precise at all. Trying to figure out the LBM, even with DEXA on those super obese people has a wide margin of error. The loss of fat is intrinsically linked to the loss of mass and connective tissue (all lean mass) which supported the fat. All the literature I have read seems to indicate that in a trained individual, there is about a 1:4 ratio of lost lean tissue to adipose in an optimal weight loss environment, and the ratio can be as bad as 1:2 if done carelessly. But the body has many protection mechanisms, especially for rebounds. Most people tout the increase in growth hormone at the end of the fast. Common sense people: The body needs to rebuild what was lost. If you believe the hysteria, they would have you believe that losing fat and gaining fat back will make you weaker and fatter each successive time. If you do some resistance training and some cardio, what you gain back what you lost. This concept of "permanent metabolic damage" is idiocy and defies common sense. The real issue here is how do you stop this yo-yo effect? It is a zero sum game. I'd propose the solution is what we have been saying for years: Change. You must permanently change your habits to permanently change your body composition. If you revert, your will go back to how you were... Not worse, not better. Just... more the same. There is obviously a lot of nuance involved here, and of course, if you have a disease or a genetic defect, you will be an outlier... People need to start respecting the human body and approach these topics from a common sense viewpoint. The science on the human body isn't nearly as precise as everyone pretends it is. This lack of precision makes common sense more valuable than any study which lacks precision. To be fair, it isn't that the science itself is failing us, it is that we simply have too many uncontrollable variables that it is impossible to isolate with the necessary precision to make some of the sweeping statements that are made in scientific studies on human metabolism. Keto is not perfect. Fasting is not perfect. These things are "tools" to use. The body can adapt and thrive in so many different environments and this seminar is a perfect example that every action has a reaction. There are downsides to everything and I am glad he brings this up. But ultimately: Does it work for you? If it is working for you, who cares what the science says? If you feel healthy, and are more healthy, then it doesn't matter if science says you shouldn't be thriving. Let your personal results dictate how you approach. Always be willing to learn and try new things and adjust as necessary.

@leebaronbespokecustomtailo9717

2 жыл бұрын

Brilliant 👏

@simplenothing

2 жыл бұрын

That was one point I took exception to as well. After doing fasts for over 20 years, the idea that you sustain metabolic damage just seems counter intuitive. Fasting is not dieting, so the Biggest Loser study probably should not have been associated with fasting.

@nataliajimenez1870

Жыл бұрын

I think that they key is that the strategy when the person is extremely insulin resistant has to be different to when the person becomes insulin sensitive. 24 hr - 48 hr fasting helps people that are extremely insulin resistant to enter ketosis. Coupled with a very low carb diet you can start healing the body and lowering that hyperinsulinism. But the doctor makes good points about not doing fasts longer than 48 hrs and not doing them too frequently. 2 days of eating until comfortably stuffed coupled with one day of fasting is a good strategy to avoid tanking the metabolic rate. Some suggest varying it, having fasts every 3, 4 or 5 days, so the body doesn't get too accustomed to a cycle. And the other thing is that electrolytes must be consumed during a fast. Also when you become insulin sensitive, you should reduce the number of days fasting

As always, Dr. Stephen Phinney does an excellent presentation here. Thank you for uploading this. I am a huge proponent of intermittent fasting, and I have alternated between the 16/8 and OMAD fasting strategy, in conjunction with a low carb diet, to lose 98 lbs - going from an obese 230 lbs to a pretty slender 132 lbs. So I can't sing the praises of low carb and intermittent fasting enough. I have contemplated longer fasts, to further augment the health benefits of fasting, but have never actually tried to do that. Dr. Phinney's counterpoint to long term fasting does give me pause. It would be nice to see a debate between Dr. Jason Fung, arguably one of the most widely known proponents of longer term fasts within the low carb community, and Dr. Phinney.

Most of this data has to do with caloric restriction, not fasting.

So when your body consumes excess energy, it is stored as fat. Yet when food is unavailable, your body doesn't use the stored fat and burns protein (muscle) instead? Doesn't make sense to me.

@Powerman80923

6 жыл бұрын

Excess food energy can also be stored in your muscles, liver, and other tissues as glycogen, which can later be used for energy. If you are glycogen depleted, those stores get re-filled first. That would happen if you exercise consistently. Fat storage has a lot to do with insulin production and how well your body utilizes it. Overweight people who do not exercise are almost always in fat storage mode. When food is unavailable your body uses everything, depending on how severe the calorie restriction is, and for how long. Nothing is constant. Like his first graph showed, things change fairly quickly over time.

@mpy1234567

6 жыл бұрын

its because the brain can only partly run on ketones, but MUST always get glucose...When you do not eat, the glucose must be created from gluconeogenesis which mostly uses protein.

@TheNicolasGosselin

6 жыл бұрын

Then perhaps you should read some literature. There is plenty of evidence that when fasting, both lean and fat mass is lost. We can argue about the % of each would be lost as it depends on context (like if you look at obese or fit subjects). But we cannot argue that lean tissue is 100% preserved. «Later,in total starvation, after the gluconeogenic phase and the saline diuresis, weight loss falls to what one would calculate, 100-200 g of lean tissue and 150-200 g of fat, for a total of approximately 500g per day. » www.ncbi.nlm.nih.gov/pmc/articles/PMC2279566/pdf/tacca00095-0049.pdf

@kimberlycooper4170

6 жыл бұрын

The body can turn fat into glucose. It's called gluconeogenesis. healthyeating.sfgate.com/can-fats-turned-glycogen-muscle-11127.html

Just finished my 3rd five-day fast per Dr. Longo's recommendation (as seen in his video interviews), though I don't bother with his Prolon stuff. Each time I come back to the gym from my fasts I am only 1 or 2 repetitions weaker. I don't know exactly what to attribute that to ... could be muscle glycogen depletion, but I always give myself 1.5 days eating before I return to the gym, so I think my muscles have some glycogen. In any case, fasting 5 days doesn't seem to do much of anything to my muscles. I expect any protein my body turns to during a fast is from my skin, which needs shrinking to accommodate fat loss, and doesn't help me survive as muscle would in a time of scarcity.

@kimberlycooper4170

6 жыл бұрын

Appleblade , are you exercising while fasting? If not, try exercising while fasting. That would keep you from losing muscle while fasting.

Very grateful for Dr. Phinney’s persistence in presenting the science around fasting so we can eat and fast in an informed way to increase our health. Thank goodness for grumpy old men!

I wonder if this video was truncated.... Because it looks like it is very confusing what message it tries to convey? Who fasts 28 days? Or weeks... How's intermittent fasting can be of any relevent to the studies shown that were made on starvation patterns, this video title is confusing and prpbably wrong, it should state the metabolic effects of starvation or extremely prolonged fasting!

MORAL OF THE STORY: fast responsibly.

Dear Dr. Phinney, Thanks for your, as always, informative presentation. You pointed out most of the risk for fasting. However, if you do medical controlled (health fasting) in authorized locations in Germany, the US or Russia, that is not problem. All your concerns are addressed by given supplements or soup, controlled re-feeding is also done. In general nobody advises to make total fasting longer than 5 days without medical supervision. Thus ppl who do that are either professionals which control these factors anyway or have done long term fasting on a regular basis and got used to it. The only thing what is important to follow up, is the BMR. That would be interesting whether if it stays low or recovers slow and what the impact on or life or performance is. Personally I do no longer fast as 5 days on my own. I got use to it (I am also low carb and most of the time ketogenic) and have not problems to gain back my performance in the gym. So from that I feel great even of my BMR is lower now. So pls keep us informed about this topic. Regards Olaf from Germany

I was doing 24 hr fast from 190 till I got to 155 , and had lost all my muscle. Mostly due to too much excercise during these fast, going to re attempt with less cardio n more weight lifting.

i am not calorie restricting. i am fasting 16:8 and eating until full in an 8 hour window. HFLC

Everyone, take a step back and look at the full message here. He is warning people against the potential dangers of long fasts, he could have been a little more clear about that premise from the start... but this is still valuable information. I am currently doing 36-48 fasts with with at least 24 hours of recovery in between. I'll continue to enjoy my benefits, but now I am armed with more knowledge.

Why does the body go for vital lean tissue and organs when there is plenty of junk protein in the most of us? Saggy skin, excess skin etc? Do we really want to keep that? How does this fit with evolution. Our ancestors who missed a meal fell to the ground like fat-blobs without muscle? : )

@danL1011

6 жыл бұрын

BJ: Why does the body go for vital lean tissue and organs when...Saggy skin, excess skin etc? It doesn't would be the short answer. The body mostly burns adipose tissue which is the most efficient store of energy. Skin is a vital organ. That it sags with weight loss has to do with less material to cover. [fell to the ground like fat-blobs without muscle?] Note that people who lose weight on a high carb diet tend to lose a lot of muscle mass. Why? They are sugar burners and break down amino acids to contribute to gluconeogenesis. Our ancestors were fat adapted and not sugar burners.

Maybe naive questions, but: is it possible that "normal" BMR is not ideal and not representative of most of human evolution. And how does BMR relate to aging? Probably also important to separate out fasting regimes where people are eating normal crap that many Americans eat vs a good diet, or at least a pre-1970s diet.

@brainout5852

4 ай бұрын

BMR equation was introduced in 1919 by Harris-Benedict , you can check a "Harris-Benedict BMR calculator" online, it doesn't seem much different from the updated version in 1984.

Well, I'm sure Dr. Fung or Dr. Valter Longo will have a retort to this. Interesting stuff. I've done a 72 hour fast and not had any problem physiologically other than extreme hunger. I'm very active and lean and I didn't lose any strength or muscle from the fast. I actually felt great but then I didn't exercise much during the fast.

Check out the MATADOR study. Two weeks is when your body starts reducing metabolic rate. Just be sure not to fast for more than two weeks. If u are intermittent fasting take a break around every 4 weeks.

I am doing one meal per day. Low carbs (30 to 100 gram per day). I am in my late 60's. Weight loss has been slow but steady. I feel well as far as energy is concerned. At my age, you need to be patient, but fasting for a day or so does work. What does NOT work is one meal a day WITH OUT curbing your carbs. No weight loss.

This is the amazing Steve Phinney PHD. Required watching for anyone who is interested in metabolic dysfunction and how to heal and even reverse this. I've learnt so much from him and his cohort. #LCHF

Started on 12/10/20 OMAD diet. I ate only four dinners, 2 of those meals were elk, one was pork and the last was two Christmass dinners which consisted of turkey, ham, mashed potatoes, stuffing greens and whole wheat bread and butter.

Does the mettabolic rate drop because of fasting or because of losing weight and having less to maintain?

@Powerman80923

6 жыл бұрын

Because they lost weight. BMR goes down with weight, and height. It drops even more when lean mass is lost. That's why it's never advised to do an extreme diet (unless your doc tells you to).

There are no words to describe how much I rely on Dr. Phinney and his studies. Excellent presentation.

I wanted to thank you for sharing the dangers of fasting. I also acknowledge your statement and belief that fasting can be very beneficial. I haven't heard much on the dangers and your information on this perspective has been very valuable. While those who have been studied while fasting showed no drop in potassium, I did suffer a drop in potassium and magnesium and suffered with refeeding syndrome. Thanks to your bravery in presenting the downsides and cautions of fasting I am now fasting only to 40-48 hrs and taking supplements and eating high quality foods on break days. My weight is now falling off at moderate rate and I am full of energy and not feeling sluggish as I did on longer fasts. I am in a constant state of ketosis and my glucose remains in the low 70's to 80's range. I am eating to satiety yet jotting down what I eat so I can make note of my caloric data. Thank you again.

Interesting , good to hear both sides ,

This video just emphasised the need to define fasting vs starvation. Short term fasting has beneficial outcomes similar to LCHF.

So much for this info. I was doing modified keto and recently started adding intermittent fasting. My labs just showed that my potassium and sodium are now slightly HIGH, not LOW. All the videos on KZread make it sound like keto and fasting are completely healthy, but they obviously aren’t when they throw your electrolytes out of balance. 🙄

For fasting more than a few days, ensure you're taking 3,000 to 5,000 mg of sodium, 4700 mg potassium (potassium chloride or citrate), and 4000 mg magnesium malate

The gut on that guy.

@TonyBraun

4 жыл бұрын

Exactly!

I had severe low blood sugar, hypoglycemia when I went to OMAD. Lost no weight until I went back to 18/6

In fact Bears are know for their letargy and lack of energy; reason why you can come up to any grown bear which has fasted many winters and just pet them... They aught to be low energy and slow and so even if they were agressive then you could just slap them back into submission, you often feeding human you! (Works with crocodiles and mice too, just starve them and then come up and pet them)

@adlsaias

6 жыл бұрын

lol

@astrocyt82

5 жыл бұрын

Hilarious

@rhinousprotected4773

4 жыл бұрын

Thank you for the smile on my face ! A strike with an attitude.

What Phinney was trying to explain during the Biggest Loser study was that even though the contestants did not fast, they certainly lost lean tissue mass because of the intense exercise and extreme calorie restriction. On a fast, people reduce metabolic rate. Since Dr Phinney had no studies that demonstrated metabolic rate effects on people who fast, he substituted the next best study he could find, which was the biggest loser study. He showed that people who lose muscle may also lose metabolic rate permanently. This was the point he was making, and although proves nothing, is a possible area of concern. He was correct for explaining this phenomenon. The most important point of this video was the explanation of muscle loss in people who fast. Dr Phinney showed where the fasting advocates probably misread studies to prove that fasting does not cause muscle loss. I think he makes a pretty convincing argument that fasting, although helpful and not dangerous, causes lean tissue loss. We also know that we get hungry for a reason. Our bodies don't tell us to eat because it is bad for us. Maintaining muscle, using it for energy, being active and healthy are strong logical arguments for continuing to eat. This is why I don't fast. I basically see fasting as a fad. I have not seen and proof that fasting does not cause muscle loss either. It seems to me that if you don't eat protein, at some point your body needs to break down lean tissue to get that protein. I am going to have to side with Dr Phinney. He is on our side, has no reason to lie, and has the integrity to tell people what he knows, knowing full well that the closed minded will talk crap about him. I am not going to fast. It does not make sense to me...

You can’t equate results from caloric restriction diets and fasting, and you can’t expect the same results from fasting on a carb based diet vs keto based diet. The people from biggest loser and other diets that focus on extreme caloric deficit never allow their bodies to get into full ketosis because they’re still carb based. This results in way more tissue breakdown for gluconeogenesis which obviously would trigger decreased metabolism. None of his data mentions prolonged fasting in a ketoadapted individuals, which are less likely to undergo gluconeogenesis. I understand the importance of knowing the potential dangers of diets, but any diet can be dangerous if done improperly.

After 10 days on a water only fast I started to get pain in my hips, lower back and sciatic. During the day it was no problem but this pain would seem to intensify at night when I laid down and I was unable to sleep at all the last two nights. I have stopped the fast until I can understand this more. Does Dr. Phinney or anyone else know what causes this and possible remedies? I was doing great other than this. After a post fast broth and fresh vegetable juice regimen I fully recovered in 3 days.

@cookwithsarah2136

Жыл бұрын

Probably you were low on electrolytes. You lose a lot of electrolytes on a water fast, which can cause muscle cramps. I always do water fasts with electrolyte supplements designed for fasting.

why would someone want to fast longer than 5+- days or do 5+- days very frequently?

@robertleapjr.1044

4 жыл бұрын

The answer depends on the person doesn't it? A perfectly healty and fit person may not want to at all or if they do, do it for spiritual or some autophagy effects. An obese person that is in the beginning of Type II diabetes, with high insulin levels and insulin resistance would want to do it to get their insulin levels under control. Like it has been stated here, extended water fasting is perfectly safe for anyone with 10% bodyfat or more, especially if they make their own electrolyte water to drink daily during the fast. This type of water fasting is probably the best treatment for Type II diabetes out there and it actually tackles the real problem of high insulin instead of amsking it like teh medications. If someone is already so bad off and already on meds and or insulin, they would need to have supervision on how to safely cut their meds during this fast. It should be logical that if yiou take something to lower blood glucose that if you quit eating sugar that you don't need the meds, but all we have to do it look at FB or the news to knwo that logic has left the building!

@DavidBrown-jk2pm

4 жыл бұрын

Autophagy, reduced physiological age, longevity.

@terrifictomm

3 жыл бұрын

It depends on their goals. The Scotsman who fasted for 384 days did it to lose over 250lbs. And it worked. If you're fasting to induce autophagy to get your body to kill cancer cells, that might be another reason to fast for 20-40 days.

Anyone who is fasting for therapeutic reasons and not just weight loss has probably found that one doesn't do an extended fast and then start pigging out immediately after beginning to eat again. That's just common sense. People who have been starved in concentration camps where it wasn't their choice would have probably had a different opinion once they were allowed to eat at some point, and that is understandable, but the therapeutic faster is not in that same category.

I stopped fasting and started 3 small meals a day. I was just crashing without food, blood sugar was too low and I felt so tired and muscles were just burned feeling.

A good caution about the symptoms of refeed syndrome, especially since breaking a fast with a heavy resistance training session followed by the refeed is a popular method of harvesting the significant anabolic effect of the refeed. I think the syndrome is more likely after an extensive multi-day fast especially if not previously fat adapted. I have not noticed any of the symptoms after three day fasts but it might behoove me to get a blood panel done directly after just to verify no aberrations (particularly the hypo-phosphate condition). Edit: The BMJ study from the 18:15 slide is fascinating and is available on line: www.ncbi.nlm.nih.gov/pmc/articles/PMC2440847/ Oh, and that study says the syndrome is most likely after fasts of more than 5 days so I guess I am OK then. Fasts of longer than that have very diminishing returns anyway.

@kimstephen6302

5 жыл бұрын

You have to be malnourished to have "refeeding syndrome". If you are truly fat adapted and not very skinny you will not be malnourished.

Since you only get one vote here to show if you agree or disagree with the message, then I down voted. There is way too much inter-mixture of fasting protocols, and it STILL really does not answer the question: AFTER a person is on the ketogenic diet for three weeks, or preferably six to eight weeks and has become "keto-adapted," THEN I want to know what happens when a person attempts an extended fast with adequate electrolyte supplementation. If extended fasting can be successfully done for 382 days by a 27 year old man going from 456 to 180 pounds, then the danger seems to be more from a possible lack of knowledge and access to medical support rather than other issues. It is time to get Kevin Hall and NIH to step in and do another study.

@garzascreek

6 жыл бұрын

What people like Jason Fung who like to reference that Scottish long-term fast fail to point out is that it was a protein-sparing fast which included all the essential amino acids and a vitamin/mineral supplement (and was unsupervised for the vast majority of the term, but let's assume compliance). In such a scenario, the patient's vast stores of energy in his adipose tissue would indeed allow such a long-term fast without significant consequence.

very interesting... big help

I'm sorry but I feel this presentation is very deceptive. 1. He first shows that studies on the Biggest Loser shows a possibility of permanent reduction in the Basal Metabolism Rate. Then he goes on to show that prolonged fasting leads to 75% reduction in BMR. What he completely neglects to mention is whether prolonged fasting results in permanent reduction of BMR. The people in the Biggest Losers WERE NOT FASTING. They were on restricted calorie diet which WE ALL KNOW doesn't work and is bad. He's making a false correlation. Very dishonest. 2. He keeps talking about mineral deficiencies in fasting subjects. No duh! You're not eating, why wouldn't you have a deficiencies. AND, who says you can't supplement these minerals while fasting? In fact, all long term fasters know to do this. 3. He talks about protein loss during a fast. But he just hints here and there that IT'S ALL MUSCLE MASS. He never states it out right because he's smart enough to know someone will call him out on it. Muscles are not the only proteins in our body. Flabby skin loss would be a welcome thing. Additionally, autophagy has shown that bad or unhealthy cells are consumed at a faster rate than normal cells. How is this a bad thing? 4. ALL of his data is from 1979 to 1981... Yeah, the time where data showed us FOR SURE that margarine and other transfats were harmless, sugar and carbs should be the staple of diet, and that eating more than 1 egg a day is committing suicide. And he keeps saying "well, these data have stood the test of time, therefore they are still relevant." No. Dr. Phinney. They are not relevant.

Phinney may not be bankrolled by anyone but I know MIT is. I do IF everyday for 18-21 hours. Works fine for me. Westman and Fung among many others would have a different take on this. I like all of them but the only real research that is important to me is the research I have done on myself. I still enjoy learning something every chance I get but don't take it to the bank until I have tested it on myself.

What does he mean by fasting for 30 days? Is that for 30 days continuously?

I started with Ketogenic diet and then once in nutritional ketosis moved to intermittent fasting 16/8 and then moved to OMAD which is 24hr fasting ans the results are much much faster once moved to OMAD. I understand that Dr. Phinney is talking about long and prolonged fasting is not advisable. Correct? OMAD should be alright then?

@longtermcareexperiences-bi5685

5 жыл бұрын

Mostly, yes, with the caveat that one gets adequate high quality protein in that meal as well as all the micronutrients, especially potassium, sodium and magnesium. See "VIRTA"

Fasting, a double edged sword? Please do tell me what the down side is, because I only reap benefits from it. It’s literally the only thing that brings my inflammation down by 100%. Just afraid to go prolonged, but I’m sure if I do... I’d cure whatever that’s been bugging me for 8 months.

Is this metabolic damage (8:00) caused by the fast or is the body just trying to get back to it's previous setpoint of fat% and/or BMI? This setpoint being set by previous lifestyle and genetic factors so that this point will now be pretty much permanent for the rest of their lives.

@Powerman80923

6 жыл бұрын

I was thinking the same thing. If they lost significant lean mass, that would explain at least part of the new lower BMR. The metabolic damage would not necessarily be permanent if they increased exercise, ate, and sleep properly to regain the lost lean mass. Based on what I have seen, genetics sets the limits, but not where you are at any given point in time. It's mostly about lifestyle.

@mpy1234567

6 жыл бұрын

in the biggest loser study, there is probably something wrong with the formula they used to predict enegery expenditure. They created a formula bc the usual ones didnt correctly work for those extra obese people. But then this formula probably doesnt work for when they lost a ton of weight. Check this on reddit: www.reddit.com/r/fatlogic/comments/4i0m8i/the_glaring_problem_with_the_biggest_loser_study/ normal people seem to have metabolic damage when using their calculation

Yeah, I noticed it by experience. The 3rd day feels sickening; HOWEVER you might be extremely bloated from a terrible diet and might be able to go on for more; but if you are on a good diet then 2 days are more than enough (literally).

I think I'm just going to stick with dr. Jason Fung and his series on fasting this guy's a goof

@mpy1234567

6 жыл бұрын

But then you can just look at the studies fung uses to make his claims and realize that very often they are contradicting what fung just said. E.g. actually read the studies that fung uses to claim fasting increases metabolic rate.

@InvestorAcademyPodca

6 жыл бұрын

Fung also takes very, very sick people and puts them on a two week fast and then a protocol of much shorter fasts. They have huge health problems and what it does to fix their diabetes and kidney issues is much more important than loosing a pound of muscle once.

@Jefferdaughter

6 жыл бұрын

Have you seen 'The Case for Nutritional Ketosis', or other talks by Phinney posted to KZread? Dr. Stephen Phinney, PhD is anything but a goof, but that does not mean that he and Dr. Fung, whom we also appreciate, cannot have a professional difference of opinion.

@rubbersole79

6 жыл бұрын

It's all or nothing with some......

@irismetcalfe

6 жыл бұрын

We know who the goof is and it's not Dr Phinney!

Well, only the true fasting lunatics do 28 day fasts...though it was interesting to see the data indicating potential permanent damage to metabolism from doing such fasts. Most of 'us' do time-restricted feeding with the occasional longer (1 to 5) day fasts thrown in for cleansing, and the associated anti-ageing benefits [I personally have ever only done a 5 day'er employing the 'Longo' fasting-mimetic diet, and found no bad after effects. Though, I did notice a prolonged exercise weakness from doing a 3 day pure water fast...which was somewhat disconcerting]. As for not taking in (natural) salt and various supplemental minerals during a more extended fast...well, you have to be devoid of basic common sense to not do so.

A brilliant talk. As always. Glad I did biomedical sciences at uni so at least I'm able to appreciate the excellent science behind this. Slightly disturbed metabolism not discussed this way at uni. It's clear that current guidelines and advice is based on mis-interpretation of the physiology and biochemistry behind metabolism. It's making a lot of people extremely ill as a result. Hopefully the message will catch on and get out there in the end. I perceive a major blocker is gaining acceptance of correct scientific interpretation from authorities because it requires massive changes to the current very established processes and regimes. I take solace that the strain of paying for medical prescriptions will eventually provide the pressure to change approach. Treatment consisting of low carb diet is a cost effective option.

lmao i couldn't do even 15kg on bech when i was 80kg now I'm 69 kg and i can do pull ups, 100kg on deadlift, 60 kg on bench and have no inflammation what so ever and all my problems have been solved. I've been fasting since February.

Although Jason Fung has done great work here I think his idea that metabolism is unchanged when fasting is obv wrong, as Phinney says. (Neither Fung or Phinney have actually done a long term fast themselves). So metabolism goes down to 70% of normal after a super long 42 day fast. So what? I'm surprised it doesn't go down further. Blood pressure and rate, insulin release, and a hundred other things go right down too. So minerals are depleted and need to be restored after a fast. So what? There is a difference between fasting and starvation where the body has no more fat to burn. Periods of fasting were an obviously necessary evolutionary adaptation for man the hunter and traveller. The lack of digestion and assimilation during fasting allows energy to be directed to a myriad of neglect such as disease cure and degenerate cell catabolism. There is literature going back hundreds of years to support this, also from ancient Greece.

@blackwatch_TV

6 жыл бұрын

John Cheetham quality reply, thanks for your input

@etfremd

6 жыл бұрын

NOT TRUE! Does anyone read about the worlds longest fasted subject in literature? Angus Barbieri his rate of weight loss was relatively constant implying his RMR did not decrease. How is this not data?

I have been fast for Autophagy for the last 2 years, up to 4 days And once or twice a month but 2 days is the most common. Problem is re-feeding is my problem, when I manage that correctly I’ll be a super power guy.

I totally did not get what you were saying.. I’m just a normal person.. but are you saying that intermittent fasting.. like every day for at least 18 hrs every day forever will hurt a person????

Biggest Loser contestants were NOT FASTING. They were using caloric restriction which has that effect (lowers metabolic rate). This is well known. CR will result in a new LOWER metabolic set point. Intermittent fasting on the other hand is based on somewhat normal caloric intake just garnered into short eating blocks. This will not lower metabolic rate. I like Dr. Phinney, but he is cherry picking some data.

Agree with all the comments on Dr Phinney.... See Dr Alan Goldhammer’s video on fasting.

Dear Dr. Stephen Phinney , I would like to ask a question! I've read the study about refeeding syndrome and i understood that it happens after an increased insulin and decreased secretion of glucagon. If my refeeding is based on a ketogenic diet, should i be afraid during refeeding after a prolonged fast?

My sister has been doing intermittent fasting for more than a year now and the same with me. Everything is in normal range a1c is perfect 5 mmol l. My clients are doing the same and none of your issues ever come into play. Intermittent fast is not jus every two days. IF is in various forms. I suggest you look into it. IF has shown so much positive results and I believe your position is a bit off the chart.

@RonMac08

6 жыл бұрын

Dr. Phinney is talking about extended fasting, not IF.

I just did a fair amount of hiking and ate the calories that I suspected would be necessary at ideal weight without exercise. So here I am, weight off, and eating well all along. I’ve done a 7 day water fast some years ago. An 8 hour window is now enough for me now. And of course, I don’t eat if I’m not hungry. Nothing special.

Much respect to the grumpy old intern,great information,thank you.

I have a question to Dr Phinney. While on a ketogenic diet, is it beneficial to be on a 18/6 intermittent fasting as well everyday (skipping breakfast and having lunch an dinner everyday)? or does it have any disadvantages?

well he asserts that whe reduction of bmr by caloric restriction and the reduction of bmr by fasting is the same, go look at angus barbieri's fast and youll see this is a wrong assertion, about the electrolytes argument, drink salt water (snake juice lol), if anybody says go on plain water for 30 days hes asking for dehydration. about the hypoglycemia, first of all most of the diabetic patients suffer from hyperglycemia so it actually shows that it is a very strong natural way of treating the disease, and it wasnt intermittent fasting but rather the 5-2 methods which isnt a real fast, those are two different things, the fact that in the conclusion it says any type of fasting doesn't make it true. relative risk is not absolute which i do wonder what it is. the supervision in the refeed window is something i accept and i do think the worst way to break a prolonged fast is with a lot of sugars but as u agreed it has its benefits. about the protein, of course that on a very long term fast you will lose lean body mass, the problem i have is that there are obese people that can still benefit from fasting despite that reduction and you scare them, i bet angus wouldn't have gotten to 96 without that fast, and it doesn't show the anabolic effects of the refeeding if they exist which i assume they do because if they didn't then that would create a hole in evolution since there were times we had to fast, so we were catabolic on the fast but if we werent more anabolic after a long fast then people would have simply lost most of their muscle without gaining it back back in the paleolithic era and natural selection would have kicked us out already. again this is a speculation but i do think that there is a high possibility that this mechanism does exist.

Did GM pay this dude? Sounds bollox from start to finish. I remember reading an article on the news telling me to eat 6 times a day to increase my metabolism, when I scroll to the end, it says ‘Coca Cola Research Foundation’. Sorry, your deathly diet advice never work for me all my life. I lost 100lb through one meal a day, not through eating small amount of things everyday.

Would weight training during fasting prevent this? Also as it is easier to carry the lighter body around and thus less muscle needed?

16:00-16:16...I think this debate boils down to what he said there. If the issue is that fasting depletes your minerals, then replenish them after your fast. I've read many studies on how fasting forces the body to "eat away" our toxins because it can't get it's fuel source from food during that time...so, in my opinion, that out weights temporarily losing some minerals during the fast. Plus, I've read you should take some sea salt with water during your fast to diminish losing too much sodium. Anyway, there are some dangers to fasting if you have a lot of health issues and it's done without guidance, done wrong or for too long but we can't fully deny that fasting does have a lot of healing benefits too. And speaking from experience on the positive of fasting...I got out of diabetic range doing 'clean Keto' AND intermittent fasting. And it wasn't until I incorporated intermittent fasting that it really speeded up my progress.

Title says fasting, nowhere in the video was anyone fasting.

Interesting perspective, many people get real worked up without taking a minute to digest what he said. First thing I picked up was that his opinions were all aimed at fasts longer than two days. Second, at least some of the perceived negative elements COULD be transitory, we don't know if they return to normal or not (BMR, lean body mass, etc) because the studies have not been done. Third, we don't compare the benefits against the drawbacks. All in all, this was a good quick review of what studies have been done and something to consider for the .01% of the population that fasts longer than two days on any sort of regular basis.

This is great. I just cant picture how people manage to go Omad and eat enough calories. I tried and still couldnt eat more than the usual meal and had to go back to normal keto because I started gaining weight. Maybe it's something cultural, rations are much smaller in europe and I cant picture someone reaching some daily macros in just one meal.

@becksbitofblue

2 жыл бұрын

Same , I had to go back to 2 meals and sometimes 3. I was getting weak. So now I listen to my body and if I'm hungry I eat. I try to eat 1/3 fat with each meal and 3rd meal mote fat because closer to bed. I noticed protein before bed raises my blood sugar to the high 80s . Doing alot better now.

Thx Doc.... I learned a lot but one thing you forgot about the studies made... Genetics, Lifestyle of people, Resources available... i'll stick with my Keto and IF as I benefit a lot

So many terms used in this discussion are either not defined or badly defined. Even the word, "fasting" can have a number of different meanings. Some of Dr. Longo's research even suggests that a diet that "mimics" fasting, meaning (I think) one gains the metabolic benefits of Fasting while also eating certain foods, triggers MORE or STRONGER fasting-related benefits. Does this mean if I drink bulletproof coffee while fasting, which has at least 100+ calories from MCT oil and butter, I'm no longer fasting even though my body is still metabolically acting like I am? If autophagy is still occurring in spite of my calorie consumption, is it still a fast? What we are trying to achieve is the maximum benefits of fasting in the best way possible. Should we discover eating certain nutrients does that, the choice to me seems obvious. We'll just need a new word for it.

I did fasting for long times and it's dangerous and I don't want to do it again. I prefer a fasting windows less 24 hours now.

I personally think the best way to fast, for fat loss, is time restricted feeding, 20-4. Maybe including one or two days of 36 hour fasting, up to 48 hours. Breaking the fast with low carb phosphorus rich foods, such as chicken liver and butter. This might mitigate the refereeing syndrome, although it’s unlikely this would be a problem after only 48 hours fasted. I am very grateful for Dr Phinney sharing these data with us

@rogerg0834

6 жыл бұрын

agreed...no more than 48 hrs...MAX. I just don't understand why Dr. Phinney is talking about "Fasting" and then presents data that is COMPLETELY ridiculous within the context of "Intermittent Fasting". A 16 to 20 hour fast is NOT equal to multiple days of fasting.

I may have missed it, but I suspect the individuals were not on a low carb or fasting-mimicking diet which really affects the results. I still appreciate the alternative information 👍 Also, everyone I know that fasts emphasizes the importance of electrolyte supplementation

So glad to see so many critical minds replying here! I’m 4 days into my fist 7 day fast and I thought maybe I was losing it! 😂 This talk is based on a lot of admitted antiquated data. What I have found is that when you isolate the data like he did here, for example his comments on the people with permanent metabolic damage, he doesn’t say what kind of study this was other than biggest loser contestants which is the worst example and not at all related to fasting. What I have learned is that SO many of these studies post useless RELATIVE percentages or are completely flawed because they don’t CONTROL for variables. He was fast talking and not going into much DETAIL about how the studies were done. Not convinced. And cherry pick is exactly what it sounded like.