Why Does Hair Turn Gray?What are the gray hair?

What  Are The Gray Hair?

Gray hair, painted by some and hated by others. These are simply white hairs that are caused by a loss of function of the melanocyte, which is the cell that causes melanin. By reducing this pigment the hair begins to whiten, academically phenomenon that is called graying.

This process is irreversible and is associated with aging, however, may also result from certain diseases or work stress or emotional. Genetics is also a very influential factor.

In general, skin, some cells are responsible for creating pigments. These cells are called melanocytes and produce melanin. Now, the type and amount of melanin produced are what gives our skin its color and what determines how sensitive we are to the sun's UV rays. Melanocytes are also in the cells that make up the hair follicles, whose function is to grow the hair of our body.

The melanin produced by these melanocytes determines the color of our hair. There are two types of melanin in the hair: brown-yellow-red pheomelanin call and blackish-brownish called eumelanin. Their number and combination of these melanins is what creates every natural shade of hair color found in the world.

And of course understand that as we age, our body's cells begin to stop working. Some scientists have explained this decline compared with what happens when you make a duplicate of a document in a photocopier and then make a duplicate of that copy, and so on. At some point, the copy begins to have poorer quality and increasingly less defined.  The doubling of the cells is comparable with this, which, after many reduplications, cells break down and stop working or work less.