One day your manicure looks so good, you wonder if you’ve missed your calling as a hand model. The next day, you start to notice that your nails have started to split and peel. What’s going on? “The ...

Cracked nails seem like a small inconvenience — a split here, a snag there — but they often reflect deeper signals from your body. Nails are made of keratin, the same protein found in skin and hair, ...