> The general advice, even from my primary care physician, has been that anything less than 1200kcal/day is dangerous and is crash dieting.
Wouldn't this advise need to keep in mind absolute height? BMI tracks the ratio between the height and weight, but it does nothing to tell the difference between a short thin person and a taller heavier (but same BMI) person. The latter which would need more calories than the former. I know people who eat ~400 kcal less than me per day, because they are shorter and similarly thinner. Following that why wouldn't their crash diet threshold be sufficiently lower?
Wouldn't this advise need to keep in mind absolute height? BMI tracks the ratio between the height and weight, but it does nothing to tell the difference between a short thin person and a taller heavier (but same BMI) person. The latter which would need more calories than the former. I know people who eat ~400 kcal less than me per day, because they are shorter and similarly thinner. Following that why wouldn't their crash diet threshold be sufficiently lower?