What causes grey hair?
Hair turns grey when there is a loss of hair colour. The loss of hair color is due to a gradual fall in melanin production in the hair bulb. If you observe the hair on a greying head, you will notice there is a full range of colors, from the normal shade through to white along each hair, and also from one hair to another. When the melanocytes stop producing these pigments, grey hair will start growing. This occurs due to age. Premature grey hair can also occur at a young age due to factors such as Vitamin B12 deficiency, thyroid imbalance and anaemia. Lifestyle factors such as smoking can also cause premature greying.
