Telomeres are repeating DNA sequences that are found at the end of chromosomes. They protect the chromosome’s genetic material and help to maintain the stability of the genome. As cells divide, the telomeres shorten, which limits the number of times a cell can divide. Over time, as telomeres become shorter, cells can no longer divide and eventually die. Shorter telomeres have been associated with aging and age-related diseases, such as heart disease, cancer, and Alzheimer’s disease. The length of telomeres can be influenced by a number of factors, including genetics, lifestyle factors (such as stress, diet, and exercise), and exposure to environmental toxins. The study of telomeres and their impact on health and aging is a growing area of research in the field of functional medicine.