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The body will metabolize the extra calories _for some time_, but eventually it will run out of coping mechanisms and it will give up, resulting in going up to 3

The body will metabolize the extra calories _for some time_, but eventually it will run out of coping mechanisms and it will give up, resulting in going up to 350lbs That's why kids who grow up eating unhealthy can look healthy for a while, but eventually they look like their parents. And once the body is out of buffer, any extra calory goes straight into storage

sarchertech 3y ago
If you eat more than your maintenance weight, you’ll gain weight. There’s not a long term coping period. Basal metabolic rate does go down with age, but basal metabolic rate and total energy expenditure are mostly stable between 20-60. The basal metabolic rate of a 60 year old is about 120 calories less than that of a 20 year old. And actual maintenance calories are 200-300 lower for people with low to moderate exercise. 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.
- paulpauper 3y ago
  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.
  - sarchertech 3y ago
    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.

sarchertech 3y ago

If you eat more than your maintenance weight, you’ll gain weight. There’s not a long term coping period. Basal metabolic rate does go down with age, but basal metabolic rate and total energy expenditure are mostly stable between 20-60. The basal metabolic rate of a 60 year old is about 120 calories less than that of a 20 year old. And actual maintenance calories are 200-300 lower for people with low to moderate exercise. 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.

paulpauper 3y ago
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.
- sarchertech 3y ago
  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.