If You Have These Lines on Your Nails After 40, Here’s What They May Really Mean

Those unusual lines across your fingernails can be easy to overlook. But while some nail changes are completely harmless, certain horizontal grooves or bands can sometimes reflect an illness, injury, nutritional problem, or disruption that affected the nail months earlier.

Have you ever looked closely at your fingernails and noticed white lines, grooves, ridges, or bands running across the nail?

For many people, these changes become more noticeable with age. And because social-media posts