Dr David Sinclair, a professor of genetics at Harvard Medical School, says the rate at which your nails grow is a good indicator of how fast you're aging.

A world-famous longevity expert has revealed that you may be able to predict your lifespan based on how quickly your fingernails grow ... Every time I have to cut my nails, I'm thinking, how ...

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 ...