What causes hair loss?

Many people sooner or later meet withthe problem of alopecia. This phenomenon is considered a normal aging process. Every day a person loses up to 100 hairs, but this loss is quite unnoticeable, since on the head, on average, they grow to 100,000 pieces. But sometimes there can be excessive baldness. In this article, try to understand what factors can contribute to hair loss?

Phases of growth

Each hair passes through 2 phases: growth and rest. In the first phase, they are 3 years, during this period they grow at a rate of 1 cm per month. After this comes the rest phase, which lasts from 3 to 6 months. In general, for the fourth year, hair begins to fall out, and after a while new ones begin to grow in their place. Falling can contribute to 2 reasons: heredity and genetics. The main cause of baldness is not hair loss, but the body's inability to produce new hair.

Alopecia in men and women

More often men suffer from alopecia than women. A quarter of the representatives of the stronger sex begin to grow bald after 30 years, two thirds begin to notice processes that sooner or later lead to complete baldness. In this case, unfortunately, the treatment of hair loss in men can not return the old hair.

Testosterone

Hair loss in men is promoted by the malehormone testosterone. Zalyasin around the crown and various bald spots indicate an excessive amount of testosterone. Representatives of the stronger sex, who do not produce such a hormone in excess, do not grow bald.

Alopecia in women

Some women may alsothe problem of excessive hair loss. Causes: genetics or the secretion of a male hormone, which begins to develop after menopause. Externally, this hair loss is different from the male. In women, thinning is formed throughout the head, but no bald patches, like in men, are observed.

Alopecia areata

In addition to all of the above reasons,hair can contribute to alopecia areata. Such a disease is considered autoimmune, which can manifest itself on the head, as well as on the eyebrows, beard and even eyelashes. In this case, the immune system affects the hair follicles, which leads to hair loss. But, nevertheless, the follicles remain alive, and if the problem is eliminated, then the hair will begin to grow again.

Shingles

Hair loss in children may occur due toshingles. This disease is easily treated with antifungal medicines. In this case, hair loss is due to fungal infection of the skin, and after recovery, alopecia stops.

Hormonal changes

Hair can begin to fall out due to insufficient activity of the thyroid gland. The hair covering will restore immediately after the restoration of the correct functioning of the thyroid gland.

Imbalance of hormones

Hormonal imbalance in women can alsolead to hair loss. It is for this reason that some young mothers may notice increased hair loss after childbirth. When the balance is restored, alopecia will stop.