Telomere theory of aging

The telomere theory of aging suggests that our cells have protective caps called telomeres at the ends of chromosomes, which gradually shorten each time a cell divides. When telomeres become too short, cells can no longer divide effectively and may become damaged or die. This process contributes to the physical decline associated with aging and the decreased ability of tissues to repair themselves. Essentially, telomere shortening acts like a biological clock, limiting cell lifespan and playing a key role in the aging process.