A deficiency in essential nutrients such as biotin, iron, zinc, or magnesium can weaken nails and cause ridges to form. Since nutrient metabolism and absorption can decline with age, deficiencies become more common after the age of 40. In some cases, vertical ridges can indicate underlying health problems such as circulatory disorders, thyroid dysfunction, or even rheumatoid arthritis. If you experience other symptoms such as fatigue, brittle hair, or changes in skin texture, it is advisable to consult a doctor. Pay attention to your intake of vitamins and dietary supplements.
When should you start to worry?
Although vertical grooves are
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