Patient: Im 14 turning 15 in a month and have a lot of grey hairs
Symptoms: Grey hair
Doctor: Hi dear patient, The condition what you are having is called as premature graying. Typicaly people will start graying in mid-30s, Genes play a large role in premature graying. Vitamin B12 deficiency and pituitary/thyroid problems can lead to graying of hair and its reversible if problem is corrected. My advise is you consult a dermatologist for further needful.