Nail health: The health of your nails can reflect your state of nutrition and your general health. Brittle nails can be caused by vitamin or iron deficiency, and by certain medical conditions, or by drying your nails out too much with solvents. Nutritional supplements with vitamin e and biotin are said to improve nail health, but the evidence suggests vit e may be more toxic than helpful.
Answered 1/15/2014
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