Women do not turn gray from nerves but from genes, scientists have found

Women do not turn gray from stress, but from a genetic predisposition
Scientists of the British company Unilever, conducting a global study, concluded that the cause of gray hair in women is a genetic predisposition, rather than lifestyle. The earlier version, that the amount of gray hair may be affected by such unfavorable factors for the body as stress or diet.

The researchers studied more than 200 identical and fraternal female twins from Denmark, aged from 59 to 81 years, reports the BBC. Number of gray hair in identical twins had exactly the same, despite differing lifestyles they led. In fraternal twins the degree of gray hair was different, because there was a different set of genes.

The study, in which gray hair is due to genetic factors, was published in the journal PLoS One. At the same time, according to the researchers, the thinning of hair with age is called the crown, including environmental causes and is associated with lifestyle.

According to the head of the research team, Dr. David Gunn, until now there have been many theories, but not carried out such global experiments. According to him, a new study scientists explains the reasons why women become gray. Thus it became clear that environmental factors are not as important as previously thought.

Accordingly, it is now clear that no matter how hard and full of stress or a woman’s life, she not for that reason. According to a member of the British Association of Dermatologists Nina Goad, a previous study also found little effect of ecology on gray hair. Thus, the gray hairs out of your control, you can not regulate it or slow down, as it is defined by an innate set of genes, experts say.

According to experts, however, and this rule has exceptions. Thus, according to Dr. David Fischer, who deals with problems of oncology, there is evidence that in some cases, the impact of chemicals on humans speeded the process of graying.

Recall that the secret was uncovered gray hair 5 years ago. Then, in the course of studies of skin cancer, American scientists accidentally discovered why people turn gray hair.

As it turned out, gray of hair protects human stem cells. When their is not enough, his hair starting to turn gray. Scientists investigated the mechanisms by which hair color and are based on the effect of melanocytes. These cells produce a natural pigment present in the skin, melanin. Pigment blends into the cells that form the hair, with keratinocytes. Melanocytes are produced and updated continuously through the stock of stem cells at the base of the hair follicle.

Adult stem cells are reproduced, with part of melanocytes, produced by the remaining stem cells are sent to the wrong sector of the follicle. Thus they can not give color keratinocytes.