The daily calorie restrictions are said to be 600 calories or less.

Sir2 activity has been shown to increase under calorie restriction.

It is thought to mimic the effect of calorie restriction.

"But to prevent weight gain, they should still consider calorie restriction and exercise."

Does it do the same thing as calorie restriction?

"I tried calorie restriction, but it made me too miserable," he said.

Calorie restriction may be nothing other than adapting the diet to the body's needs.

But the data simply does not support this; any loss is from severe calorie restriction.

There's no shortage of skepticism about calorie restriction in the scientific community.

This would mean that calorie restriction simply means mimicking the energy supply of a natural environment.