The Hallmarks of Aging

Researchers reviewed many earlier studies and proposed nine “hallmarks,” meaning biological changes that commonly appear as bodies age. These included DNA damage, shortening telomeres that protect chromosome ends, poorer energy production in cells, and a buildup of worn-out cells. No people or animals took part in this paper, and it did not test a treatment. It organized existing evidence into a framework for studying why aging happens.

What this means for you: This is a useful map of aging research, not proof that any supplement or treatment can slow aging. You can use it to understand research claims, but it does not by itself justify buying an anti-aging product.