If you have these lines on your nails, you should pay attention.

ridges run from the cuticle down to the tip of the nail. These are the most common and, in many cases, the least concerning.

As we age, the body slows down cell turnover—including nail cells. That’s why mild vertical ridging is especially common in older adults and usually doesn’t signal disease.

However, context matters. If vertical lines appear alongside continue reading …