Why do some men go bald very young?

Many Possible Causes: Young men can develop baldness (alopecia) for many reasons, including breakage of hair from straighteners or dyes; certain skin diseases that cause destruction of the hair follicles, autoimmune disease, hormonal imbalance, iron deficiency, vitamin b deficiency, chemotherapy, shedding after illness, hereditary (genetic) factors, or alopecia areata.