Grey hair occurs when bulbar melanogenetic cells produce less melanin then it normally would. Hair colour is determined by the quantity, distribution and types of melanin within each hair.
There are 2 types of melanin: Eumelanin and Phaeomelanin, whereby our hair colour is based on the combination. Eumelanin is a dark red, brown to black and is normally more dominant among Asians hair, as compared to Phaeomelanin a light yellow to red found mostly in Eurasians. A number of people do not experience total greyness or whiteness of hair but grey hair with a tint of light brown. This is due to the bulbar melanogenetic cells producing melanin however at an insufficient level.
Some causes that lead to greying hair are as follows: Genetic predisposition, Aging, Anemia or poor blood circulation, insufficient nutrients, Vitamin B1 and B12 deficiency, Hormonal Imbalance and others. |
