Aging is a complex, multifactorial process that starts in our cells, resulting in a gradual decline of the larger systems in the body. Scientists have proposed various theories for the reason we age, including oxidative stress, mitochondrial dysfunction, cell senescence, and telomere shortening. Telomeres, the structures at the end of chromosomes, help to protect DNA from damage and allow chromosomes to replicate properly during cell division. Mounting evidence indicates that telomere length ...