Protein-heavy diets accelerate aging, don't they? I thought that was the result from studies into caloric restriction... a reduction in certain kinds of protei

Protein-heavy diets accelerate aging, don't they? I thought that was the result from studies into caloric restriction... a reduction in certain kinds of protein (leucine?) and a reduction in DHEA loss correlate heavily with calorie intake, and are what makes caloric restriction good?