Everybody experiences gray hair at some point of time in his or her life. Gray hair is not always related to one’s age. People are getting gray hair in their teens too.
In many cases the graying starts in their 50s or even older. Hair getting gray is a slow process. As the person ages, the color pigment production reduces and the gray hair begins to appear.
There are cells in our hair called ‘Melanocytes’ that are responsible for generating pigments. Melanin is one of the main pigments and gives our hair its color. If more melanin is present the hair color is darker and as the melanin content gets reduced the color gets lighter. When the pigment production is stopped by Melanocytes it results in transparent hair. When this transparent hair is getting compared with the healthy hair with its natural color it appears gray.
One of the main factors of graying is heredity. If the parents had gray hair at a young age, generally their children also start graying early. There are cells at the roots of the hair which generate the pigment that is necessary. Gradually the pigment produced by these cells gets reduced and a day comes when there is hardly any pigment left. This can also be due to the medical condition where in the individual has deficiency of vitamin B12 or he suffers from thyroid imbalance. This can also cause the hair to get gray.
When the hair is partly colored and partly gray it is known as ‘salt and pepper’. Smokers are at risk of getting their hair gray earlier. Smoking is also linked to hair loss. There is no scientific evidence that diet, supplement or any herb can prevent hair from getting gray.
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