Doctor Jason Fung Still Doesn't Understand Obesity | What the Fitness | Biolayne

“You’re not fat because you overeat… you overeat because you’re fat.”Sounds clever. It’s also wrong. This is a repackaged version of the carbohydrate-insulin model of obesity, the idea that insulin drives fat gain, which then makes you hungrier and causes overeating.

There’s just one problem: When calories and protein are matched, fat loss is the same regardless of carb intake or insulin levels.This has been shown over and over again in tightly controlled studies. High-carb, low-carb, different insulin responses… same fat loss & similar improvement in metabolic health when energy intake is equal (PMIDs: 28193517, 19720791, 29466592, & 27385608)

If insulin was the primary driver of fat gain, that shouldn’t happen. But it does. Consistently. And here’s where the theory really falls apart:

The most effective obesity treatments we have right now: GLP-1 mimetics like Ozempic actually INCREASE insulin secretion in response to meals (PMID: NBK551568). According to the carb-insulin model, that should make people hungrier and fatter. Instead, people eat less… and lose a significant amount of weight.

So what’s actually going on? Obesity is influenced by biology, environment, and behavior, but it still ultimately requires a sustained energy surplus.You cannot create mass out of NOTHING.

Hormones can influence hunger. They can influence how much you want to eat, thus increasing the ‘calories in’ side of the equation. But they don’t override thermodynamics. You don’t get around energy balance. End of story.

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Видео Doctor Jason Fung Still Doesn't Understand Obesity | What the Fitness | Biolayne канала Dr. Layne Norton