A member asked:

Why are my toe nails curving and curling downward. they use to grow straight. now some are growing in a curve and curl?

A doctor has provided 1 answer

Downward nails: nails are made from tough keritin protein., Diet,past and current illnesses,age all effect the way they grow. Downward growing nails may denote liver,heart or respiratory disease---or arsenic poisoning. Nails that are flat in their growth pattern can be caused by Iron or protein deficiency--psoriasis and diabetes See your private doctor for evaluation

Answered 1/11/2018

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