While fixing the diet is important, the total calorie limit is meaningless. What one eats strongly influence metabolism pathways and the amount of energy that is dissipated as excessive heat.
For example, the body cannot store in any large amounts carbohydrates. So those have to be converted into fat first. Yet compared with pigs humans luck efficient enzymes for that conversion and it takes up to 30% of calories to convert carbohydrates into body fat. Compare that with fat where a typical cost of storage is just 1% of energy.
For example, the body cannot store in any large amounts carbohydrates. So those have to be converted into fat first. Yet compared with pigs humans luck efficient enzymes for that conversion and it takes up to 30% of calories to convert carbohydrates into body fat. Compare that with fat where a typical cost of storage is just 1% of energy.