Everyone knows the superstition that one can turn gray from intense fear. There were rumors that something similar happened to Marie Antoinette. But medical research shows that it is difficult to give a definite answer about the veracity of these stories. Hair gets its color from two types of melanin pigment: eumelanin, which determines how dark the hair is, and pheomelanin, which determines how light it is. Over time, the hair follicles stop producing these pigments, and the hair becomes colorless or grayish in color.
Canities subita is characterized by a sudden discoloration of the hair. Scientists believe that the cause of this disease is not so much a change in color as a loss of pigmented hair. A condition called alopecia ariata causes hair to fall out quickly, leaving bald patches. It is associated with the body's defense mechanism, which automatically turns on in case of severe and sudden stress. However, this theory cannot explain some amazing cases when young people who did not have gray hair in their hair turned gray early and very quickly.
In order to establish exactly what happens in such cases, it is necessary to test the hair before and after the shock, to study its thickness and pigmentation. Extreme situations in life are quite unpredictable and dangerous, which creates problems for researchers.
Expert opinion of the portal
It is medically impossible to go gray overnight. Despite the claims of many hair care product manufacturers that their products will restore the vitality of the hair, they are always "dead". As soon as the hair leaves the surface of the human head, it is no longer influenced by any psychological or physiological processes occurring in the body (including fears and shock).
Even if some injury, illness or sudden shock causes hair to turn gray, it will be weeks before it is visible. This will happen because the impact occurs directly on the root of the new hair. Something similar can be observed when the nail is damaged in the cuticle area: over time, the injured part grows back.
Output
Hair can't turn gray with fear at times. It is the same as if leaves had grown on the dry branches of a tree overnight.
Source estet-portal.com
Add a comment