Re:America’s Obsession with Weight-Loss Drugs Is Affecting t...
by paulpauper on Saturday August 19, 2023 @11:40PM
(#37195884)
also, metabolism and genes play a role, the latter which determines the former. people with good genes can increase metabolism to keep weight the same despite eating a lot more than needed, without becoming obese.
Re:America’s Obsession with Weight-Loss Drugs Is Affecting t...
by sarchertech on Sunday August 20, 2023 @01:26PM
(#37201162)
Biology is certainly a factor. BMR varies between individuals (even of the same weight and body composition). However it’s probably a smaller factor than the genetic influence on hunger and satiety.
And despite individual variation in BMR, I haven’t heard any evidence that some people have the ability to significantly ramp up their metabolism in response to consuming more calories.
Basal metabolic rate does go down with age, but basal metabolic rate and total energy expenditure are mostly stable between 20-60. A 60 year old burns about 122 fewer calories than a 20 year old.
What happened is that the kid is either eating more, or is exercising less.
A normal 20 year old who isn’t an exercising a significant amount can’t regularly eat 3600 calories and maintain a healthy weight. That is to say, the average 20 year old with a healthy BMI who exercises 1-3 times per week will gain somewhere around 2 lbs per week eating 3600 calorie per day. They’ll gain less over time if they don’t start eating more as they get closer to 350lbs because their maintenance weight will go up.