Lines on your nails may indicate nutritional deficiencies or other health issues.

wellness. Nutritional imbalances—particularly deficiencies in biotin, iron, zinc, or protein—may influence how the nail plate forms. When paired with symptoms like fatigue, brittle hair, or pale skin, changes in nail texture may hint at underlying nutrient shortages.

Although most vertical ridges develop slowly and have harmless explanations, it’s still important to stay aware of your nail health. In rare cases, sudden or dramatic changes may signal issues affecting the skin, immune system, thyroid function, or circulation. Nails can sometimes reflect health problems before other symptoms appear. Warning signs such as

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