Aging is influenced by genetics and environmental/lifestyle factors like smoking and living near highways.

“Genes, Lifestyle & Aging”

“scientists calculate only ~20% of biological aging is genetically determined. The rest is up to u 💪”

“How much of aging is due to genetics, there's no question there's a strong genetic component. You look at centenarians, they run in families. But there's also a strong environmental component, you don't have to look past smoking, or some of the things you described earlier, living near highways, to see how to, you know, decrease people's lifespans.”