What Those Vertical Ridges on Your Fingernails Might Be Telling You — Especially After 40

2. Dryness and Dehydration

One of the less obvious effects of aging is a loss of moisture, not just in our skin but also in our nails. Drier nails tend to become more brittle and less flexible. This makes any existing ridges appear more prominent and can lead to cracking or peeling.

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