Why do our nails start growing vertical ridges when we get older?
In: Biology
Slight vertical ridges in fingernails often develop in older adults, possibly due to a slowing of cell turnover. This is when new skin cells produced below the surface of your skin rise up to take the place of dead cells that are discarded from the surface.
https://www.healthline.com/health/ridges-in-fingernails#causes-and-symptoms
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