Telomeres Telomeres Explained: The Science Behind Cellular Aging Many scientists believe that part of the aging process begins deep within our cells, at the very ends of our chromosomes. These structures are called telomeres , and they play an important role in cellular health, longevity, and disease risk. Understanding how telomeres function may offer insight into why we age and how certain lifestyle choices could support long-term cellular health. What Are Telomeres? Your D