Low levels of essential nutrients such as iron, zinc, or magnesium can weaken nails and cause ridges. Because metabolism and nutrient absorption can decrease with age, deficiencies become more likely after age 40.
In some cases, vertical ridges may indicate underlying health problems, such as circulatory disorders, thyroid dysfunction, or even rheumatoid arthritis. If you notice other symptoms, such as fatigue, brittle hair, or changes in skin texture, it’s worth consulting a doctor. Buy vitamins and supplements.
When should you be worried?
Although vertical ridges are usually harmless, you should be cautious if you experience:
Changes in nail color (especially dark lines or streaks)
Breaking, peeling, or thickening of the nail
Pain, swelling, or inflammation around the nail
These could be symptoms of a fungal infection, injury, or, in rare cases, melanoma (a serious form of skin cancer that can appear under the nail).
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