Earlier quoted context omitted.
> Idk why this is being downvoted, its Cal-in,Cal-out... Calories-in vs. Calories-out is not helpful advice. A person's metabolism can slow to a crawl if the person is starving. It's much better to fix the metabolism, and remove metabolism-destroying foods from the diet. Many common foods should not be eaten (tofu), or only eaten when well-cooked (kale) [1]. [1] https://en.wikipedia.org/wiki/Goitrogen#Goitrogenic_foo…
> Calories-in vs. Calories-out is not helpful advice. A person's metabolism can slow to a crawl if the person is starving. To be at that level of starvation would require the person's body fat percentage to drop to essential levels. "Starvation mode" in normal weight and overweight people is a pernicious myth.
Metabolism control seems to be based of medium term intake rather than fat stores. Either that or there is a set point which is quite hard to move. Or both. Handling the fat does increase basal metabolic rate to an extent. But only so far. The abovementioned slowdown starts with mild thyroid suppression and shows up in bloodwork. This can cut BMR by up to half without starvation. (25% calorie cut from high levels is nowhere near enough)
The problem is, this reduces will to both diet and exercise and induces a low grade depression.