I have grey hairs at 19, should i be concerned?

A cosmetic issue: Grey hair can start to form at a young age in a few individuals. Nineteen is very young and at that age usually a scattering of grey hair might form. Some in their thirties, however, go completely grey. There is no remedy for this except for hair dye. And it is not a clue of aging elsewhere in the body so you will otherwise age normally.

Graying of hair is: related to genetic predisposition. Age of initial graying is largely a matter of genetics. However stressors: nutritional deficiencies, chemotherapy, traumatic head injuries, low vitamin B levels, zinc deficiency, severe illness, surgery & marked emotional stress may impact earlier depigmentation in people who are already predisposed to gray hair. Aging is a significant factor. In general –