Early hair greying is many times a genetic predisposition with many cases of occasional grey strands noticed in children of eight years also. There are several cases when there is a discreet link between hair discoloration and a systemic disease which needs to be probed in detail. What causes grey hair? Many exposed to second hand smoke, low haemoglobin, thyroid disorders-hyperthyroid or hypothyroid or other genetic disorder diseases develop early hair greying. Greying of hair is nothing but pigment or melanin production inhibition in the root of the hair. A big farce is that fad-diets or protein-vitamin mineral nutritional supplements can affect the rate of greying. Greying of hair, be it due to the normal ageing process or untimely greying has been known to have a genetic basis. Once the melanin pigment dies out at the particular hair root, the new hairs that grow are inevitably greyish or white in colour. Children suffering from blood cancer, HIV, undergoing chemotherapy, protein  [...]