Your fingernails might seem like simple protective coverings for your fingertips, but they’re actually sophisticated diagnostic tools that can reveal crucial information about your protein intake.

Medically reviewed by William Truswell, MD If you have yellow nails, this could be a sign of aging, smoking, or yellow nail ...

Longitudinal ridging on fingernails or toenails, also known as vertical ridges, are slender raised lines that run from the base of the nail to its tip. Often appearing as faint vertical stripes, these ...

Your fingernail growth holds cues to your biological age and even tells you how long you are going to live. A world-renowned longevity expert has said the speed at which your fingernail grows can tell ...