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I used to be very interested in the speaker (Jason Fung) too. But after getting much more interested in nutrition over the last few years, I now think he is so
by edanm 4y ago
I used to be very interested in the speaker (Jason Fung) too.
But after getting much more interested in nutrition over the last few years, I now think he is someone to avoid. He is basically outside of the scientific mainstream, and continually says things that are just not supported by actual studies. And there have been many studies on this.
Weight is a product of calories in vs out, both in the trivial sense (conservation of energy), but also in the sense that if you control the amount of calories you eat, and keep it below your calories out, you will lose weight. It's true that calculating your actual calories out is basically impossible, but you can estimate it, and then just reduce more calories if you're not losing weight.
This has been proven multiple times in real experiments with real subjects. This is agreed on by basically everyone who's actually in the field. There is also ample anecdotal evidence that this is true (every athlete, bodybuilder, etc that wants to gain or lose weight can do so basically at will, on a set schedule they plan months in advance. It's almost precise and very scientific.)
- user3939382 4y ago> just not supported by actual studies If you take the time to watch the talk I linked to (I understand if not, it's pretty long) he spends a substantial amount of time citing and discussing studies. He's not just throwing out a bunch of unsubstantiated theories. As non-scientific anecdotes go, I've confirmed this myself. I went on keto and absolutely did not reduce my calories, actually I increased them, but severely cut carbs / sugar and I lost 5 notches off my belt in 3 months. > just not supported by actual studies Here's the second result on PubMed for last year published "ketogenic weight" https://pubmed.ncbi.nlm.nih.gov/36012064/ https://pubmed.ncbi.nlm.nih.gov/36012064/ Ketogenic Diet Benefits to Weight Loss, Glycemic Control, and Lipid Profiles in Overweight Patients with Type 2 Diabetes Mellitus: A Meta-Analysis of Randomized Controlled Trails > "A ketogenic diet, characterized by low calories with high levels of fat, adequate levels of protein, and low levels of carbohydrates, has beneficial effects on body weight control in overweight patients." I wouldn't say it's case closed, this area of nutrition science needs many years of additional research, but to say flatly that studies don't support the hormone model of weight gain isn't correct.
- throwaway0x7E6 4y ago>absolutely did not reduce my calories, actually I increased them unless you've kept a highly detailed journal of things you ate and their precise amounts, then it's indeed just an anecdote. it's physically impossible to accumulate fat - which is the storage medium for excess energy - without consuming an excess of energy. it is indeed very much case closed.
- user3939382 4y ago> then it's indeed just an anecdote That's explicitly what I said it was. > it is indeed very much case closed As the research I linked to makes clear it's not.