Gray hair, those white hair covering the hair Over time, they become very feared. In general, they are associated with aging and dyes or treatments are usually sought to hide them. Now a Harvard study has revealed the causes that underlie them and how to prevent them.
Gray hair is hair that They lack melanin, which is a pigment produced in hair follicles and gives color to hair, the skin, the iris of the eyes and the hair of the body. The darker the hair color, it means more melanin is produced. On the contrary, when this production capacity is lost, hair loses its original color and becomes white or transparent, giving way to aging.
According to Robert H. Shmerling, expert at Harvard Medical School, the most important factor is the geneticsince it determines the rate at which the hair follicles stop producing melanin. It is also important ethnicity: people of white and Asian origin generally have gray hair at 30 years, while those of African descent tend to come out 40.
As the expert points out, situations that modify the state of our emotions, whether stress, anxiety, fear or anxiety, can lead to further hair loss and accelerated wear of hair follicles. As soon as you put stress aside, it will help new hair grow and return to its natural color.
According to reports from Harvard, to prevent gray hair it is essential lead a healthy life with a diet rich in nutrients such as iron or biotin, which are key elements of hair. In addition to reduce stress, Protect hair from chemicals and the sun.