Westside PUFAs
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- Feb 4, 2015
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I could possibly see Ray and Penn being an exemption, through the use of cold thermogenisis and mechanisms like brown fat, but slowed BMRs are the rule when it comes to weight loss, not the exception. It will absolutely apply to the people that had bariatric surgery. It's simple physics. All mass, even white fat, burns some calories at rest. Mass goes down, BMR goes down. It also applies to activity, as it takes more energy to move say, 250 pounds than it does 200. If Ray and Penn have indirect calorimity readings that show that BMR goes up (or holds steady) as weight goes down, that is amazingly impressive.
The issue with the Biggest Loser phenomenon is the matter of degree. Instead of BMRs going down as would be predicted, they absolutely crash. So an expected drop from say, 1900 to 1700 calories a day goes more like from 1900 to 1000.
But there could be a number of factors to this. The Biggest Loser diet is probably the most radical diet ever designed. Daily caloric deficits of 4,000-7,000 calories are common. Bariatric surgery patients are in bad shape, but contestants on The Biggest Loser are in far worse shape at baseline than the average bariatric patient, at baseline or even after 12 months of forced caloric restriction. BL contestants also lose more weight in a period of 7 months than bariatic patients do over the course of their first year. The massively out of shape people go from completely sedentary to working out 4-6 hours a day in less than a week. On top of that, some use water manipulation techniques for big weekly weight losses, and stimulants like Adderall are used by some contestants.
Here is the study comparing the two -https://www.ncbi.nlm.nih.gov/pubmed/25236175
Jillette didn't use cold thermogenesis nor do people who've had bariatric surgery. Haidut is claiming that "dieting" will slow BMR leading specifically to adipose tissue enlargement aka getting fat again. It's not true. It depends on what said person eats. The liver doesn't just magically convert carbohydrate, protein, and fiber into enough amounts of fat to be stored simply because one dieted.