Some people appear to age more slowly than others. This is partly due to genetics, which studies suggest accounts for around 25% of the variation in longevity but is largely due to lifestyle and the environment. Modifications in lifestyle , such as following a healthy diet, exercising regularly, getting adequate sleep, not smoking, and not drinking alcohol to excess, can help slow a person’s rate of aging and delay or prevent age-related disorders. A person’s rate of aging is often referred to