1. In high doses, vitamin A can cause brittle nails, hair loss, headaches and liver damage. 2. It also produces dry skin, wrinkled skin, sparse dry hair, small brittle nails and cone-shaped teeth. 3. The symptoms of anemia include not only fatigue, but may also include headache, dizziness and brittle pale nails. 4. More than this amount could cause selenosis, a toxic reaction marked by hair loss and brittle nails. |
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