Is Intermittent Fasting Safe & Healthy? [Mark Mattson, PhD on Fasting]

Is intermittent fasting safe and beneficial or unsafe & dangerous??
Mark Mattson is the former Chief of the Laboratory of Neurosciences at the National Institute on Aging and is currently a professor of neuroscience at Johns Hopkins University School of Medicine. His research has advanced an understanding of the cellular signaling mechanisms that control the formation and plasticity of neuronal networks in the brain, and cellular and
molecular mechanisms of brain aging and neurodegenerative disorders. Dr. Mattson is among the most highly cited neuroscientists in the world. He was elected a Fellow of the AAAS and has received many awards including the Met Life Foundation Medical Research Award and the Alzheimer’s Association Zenith Award.



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Ken D Berry, MD, is a Family Physician with 20 years of experience seeing patients in the clinic, emergency department & inpatient, and has seen over 25,000 patients in his career so far.
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[janicew]

Farmers basically eat twice a day, breakfast after morning chores and supper after evening chores. We never had lunch growing up, just didn't happen and we were thin.

[paulineburney]

because I am in my 8th decade, and my mum was born in 1912 I was brought up to regard carbohydrate as something to be cautious about. She was horrified by the High fibre, low fat revolution and the fact that too many foods were 'unnatural'and 'messed about'

[TBI-Firefighter-]

145 Pounds lost on Carnivore over the past year, Thank You Doc Berry your advise saved my life. I do eat a few Cruciferous Vegetables each day but never more than 20 carbs daily. I fast 18 hours every day

[DodjiSeketeli]

Breakfast is indeed the most important meal of the day as it's the only one I have, at dinner time! So I do indeed take it seriously.

[cmorton]

I'm doing a 20:4 IF eating schedule with 48- 72 hr fasts monthly. I also do ketovore. I've gone from 195 7 months ago to 135 now.

[nelacostabianco]

The notion of breakfast was commodified by the industrial food complex. In actuality it only refers to the first meal you have after a period of fasting, hence 'break-fast'.

[mattalexander]

I don’t think calorie restriction is the path to health. I think feasting(low carb) and fasting is the way to go combined with an active lifestyle.

[ianstuart]

Thar was a fantastic and very informative interview, Dr. B. I was so impressed that you didn't try to rebutt the comment about red meat. To me, it demonstrated a high level of respect for your guest. And he in return, wanted some advice about nut consumption! Great respect for the both of you!

[pqodbenliah]

I really like that you branch out and bring people in that don't necessarily align with your thoughts but are nonetheless seeking the truth on health.

[horse__power]

Eating 3 meals a day has nothing to do with farming. When you are working hard, you may want a break but you don't want to eat because that makes it difficult to work afterwards. We just waited until supper when we could enjoy a good meal, relax, then sleep.
I think that city slickers were the ones that wanted to eat so often because they had nothing better to do!

[mrmoe]

I heard a fitness guy named Charles Poliquin say something that made a lot of sense. He said "you have to earn your carbs." Basically the more physically demanding your life is the more carbs you can get away with eating. For most people's lifestyles today they'd be better off focusing on protein and healthy fats and keep carbs to a minimum except on days where they're way more active.

[ann-mariecoombes]

I was more than happy to hear how exogenous ketones consumption protects the brain. I drink them daily, bc my dad has dementia and I want to avoid it at all costs. I studied Chinese Medicine 30 years ago and the most important piece of advice from a lecturer was, prevention is better than cure.

[gratefulketo]

Before I even was a quarter of the way through this interview, I immediately looked up whether or not Dr. Mattson was vegan. He is probably healthy, but he doesn’t look it to me. When I was on keto and lost all my weight, I had the same look. I was not eating enough meat. I gained some of the weight back, and now I am doing Carnivore. I have increased my meat and collagen intake, and I am hoping my face will not look quite so emaciated. It may just be a product of being 70 years old but I’m hoping I’ll have a little bit of fat on my face. Oh, well, it will be what it’ll be!

[ifomadnotsad]

This makes so much sense about leptin resistance. I say so because before I embarked on my health improvement journey, I used to think that perhaps my full button in my brain was broken.

[tinachristenson]

When he first started speaking, I thought he looked very unhealthy. Then he said he eats a lot of vegetables and doesn’t think much of keto! Good points on IF, terrible on diet- he looks sickly.

[franciscojaviergomez]

Lots of benefits, not many dangers from IF. Great interview!!

[shalamusic]

type 1 diabetes since 1989.Started the Zone diet of Barry Sears early 90's, eliminating grains and complex carbs. Now graduated to Keto. Fasting is tricky for type 1's. Right now I'm eating every 5-6 hrs

[jimgillert]

People at work were worried about me only having sugar free coffee or drinks on lunches and breaks. But I felt sharper being keto while active.

[chazwyman]

I've pretty much been doing OMAD od 2MAD for 17 months now. I lost 45lbs last year, but not lost anymore for the last 8 months. I still have some to lose, but am happy with the current balance. I don't really feel the need to eat between meals, and I can't see any problems, only benefits.

[suzikirby]

Dr B is the best at listening, interjecting his points respectfully and I think gleaning out the Wonderful intellectual nuggets from these giants in their fields. Remember everyone, not one of us is 100% right.