Hi how can i regrow my hair after zinc supplements made it thin out ?

See PCP first.: You may want to stop the zinc if you feel this was the culprit. It would also help if you get your thyroid functioning tested because hypothyroidism can make you lose your hair. Some medications like blood pressure drugs can also cause thinning of hair, as well as hair dyes, and stress. When these problems resolve, your hair can grow healthy again. Also rule out genetic causes.