Have you ever noticed faint lines running the length of your fingernails? For many people, vertical ridges become more apparent with age, sparking curiosity—or even a little concern. While these lines may seem surprising, they are usually a normal part of the body’s natural changes over time. As nail growth patterns shift and cell turnover slows slightly, the once-smooth surface of nails can develop these subtle, lengthwise ridges. In most cases, they are harmless and simply reflect the story of your body as it ages.
Daily habits can also affect the appearance and texture of nails. Frequent handwashing, exposure to cold air, or contact with cleaning products without gloves can strip moisture, leaving nails dry and more prone to ridges. Nutrition plays a role too. Nutrients like biotin, iron, and zinc are essential for healthy nail growth, and a deficiency may show up in nails, skin, and hair. Staying well-hydrated also helps—dehydration can make nails brittle or accentuate ridging.
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