Gray hair at fourteen is not always just a quirk of genetics. Sometimes it is the scalp's way of signaling something the rest of the body has not announced yet. Melanocytes, the cells inside each hair follicle that produce pigment, are sensitive to nutritional status, hormone levels, and immune activity. When those systems are under strain, melanocytes can slow down or stop working years ahead of schedule. The result is visible on the head long before any other symptom appears.
