If you’re wondering how long you’ll live, the answer could be right at your fingertips. According to Dr. David Sinclair, a professor of genetics at Harvard Medical School, your nails are actually a ...

Life runs on information. In living systems, that information takes two main forms: the genome and the epigenome. The genome stays mostly stable. The epigenome, however, constantly shifts, shaped by ...

“Fingernails can be a direct reflection of our age,” Dr. Shari Lipner, a dermatologist at Weill Cornell Medicine and NewYork-Presbyterian, tells Fortune. “As we get older, our nails generally become ...