white hair has always been a hallmark of aging, almost unwelcome, but the white hair of scientists through the process of studies have found that white hair will help the body fight against cancer.

human body melanocytes produce pigment coloring hair, the number of decisions by stem cells. According to the United Kingdom, "New Scientist" magazine Web site reported that Japan's Tokyo Medical and Dental University, Emi Nishimura and his colleagues found by experiment, when the hair follicle stem cells to reduce the time, hair will be white. The researchers will contact mice to DNA damage of radiation and chemicals, damage to stem cells to permanently into melanocytes, and the reduction in the number of stem cells will eventually lead to significantly reduced melanocytes, therefore, the hair on the body of mice become gray.

Harvard Medical School Professor David Fisher said that the white hair and may help prevent cancer. The principle is, DNA damage lead to restrictions on stem cell division, thereby reducing the probability of mutation. White hair and the process will be possible to remove the risk of cancer cells.