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Hair fall in autumn and grow vesnoy



Pet owners may have noticed that some pets in spring and autumn moult. Of course, the process of the loss of wool or feathers in itself is not very aesthetic, but it is necessary - after it grows beautiful new coat, which is easier to survive the winter and attract a partner. As for the people, then we, too, fade, and we, too, grows a new layer of hair, beautiful and thicker former.

Hair growth - a process consisting of three stages. In the anagen phase (or increase) tiny bulb follicle shrinks, weakens and sinks inside, and in its place grows a new strong follicle. New hair is growing along with the old out of the same hole as long as the old hair without a root finally fall.

After the anagen phase comes the catagen stage, or "rest": hair growth slows down, and the follicles under the skin begin to shrink, gradually losing strength and volume and turning out close to the skin. And, finally, there comes a stage of telogen, where the hair stops growing at all, and sometimes begin to fall.

The study was performed on male Europeans, showed that active people who spend a lot of time outdoors, more than 90% of follicles in the anagen phase remained in the early spring and the autumn, the number fell to 80%. Also in the autumn of people lost twice more hair than spring.

A second similar study was conducted on women from New York. Women, as well as men lose more hair fall in the spring, on the contrary, there is a period of active hair growth.

It is possible that loss of hair on the body - the body's attempt to adjust the heat transfer, despite the fact that the hair on the human body is negligible compared to the majority of animals. Much more interesting spring hair growth: maybe, our bodies tend to grow a better pelt to attract a suitable partner?

via factroom.ru