Do not get angry over time because they have an immunological explanation.
As you get older, problems such as hated gray hair, falling teeth, and obvious wrinkles always occur, for everything there is a solution like going to your dentist in Tijuana , painting your hair and using creams, then a scientific explanation of why of gray hair
White hairs are hair that turns gray or white due to a loss of pigmentation. Specifically for a gradual loss of melanin that, among other purposes, provides hair color.An exaggerated immune response, as can occur with viral infections, could cause the sudden onset of gray hair, according to an experiment with mice. The results indicate that a molecule of capillary pigmentation also controls certain genes of the immune system.
The study does not explain why fear or a serious illness would induce the rapid onset of gray hair, but provides information on vitiligo, an autoimmune disease that causes loss of skin color, and melanoma, a cancer of pigment cells cutaneous.
The whole study was done with mice, so we would not make too many inferences in human beings without further experiments but we hope to be able to evaluate if the mechanism identified would explain the appearance of premature graying that some people comment.
The hair color depends on the stem cells of the base of the hair follicles. As hair falls out, new hair grows and those cells become melanocytes, which produce the pigment that gives color to hair. When those stem cells are lost, the hair grows gray.
Which controls several genetic pathways of these stem cells, intervenes in the hair color change of mice. In the new study, it also controlled the activity of certain genes that control the immune response to viruses.
Mice with mutations of the MITF gene have an exaggerated response to the viruses that induces the loss of melanocytes and their stem cells in the capillary bulb, which causes the hair to turn gray.
Although it is too early to say, people with similar mutations in that gene may have the same response that would induce spontaneous hair color change after a viral infection, according to the authors.