Causes of premature graying, other than just getting olk?

Genetics and stress. Genetics and stress are probably the two most common reasons.
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 –