Getting to the Root of Hair Loss
26 March 2012
An example of male pattern baldness
SHIRLEY GRIFFITH: This is SCIENCE IN THE NEWS, in VOA Special English. I’m Shirley Griffith.
JUNE SIMMS: And I’m June Simms. Today we talk about hair. We will tell what hair is, how it grows, and some of the main reasons people lose it.
(MUSIC)
SHIRLEY GRIFFITH: Hair has always been an important sign of beauty. This is especially true for women. Next to the face, hair is one of the main qualities people look for when they consider a woman’s beauty. Whether long or short, curly or straight, hair often gets a lot of attention. People who have it value it. Those of us who do not often mourn its loss.
JUNE SIMMS: Each hair on a person’s head grows from a single tube-like hole in the skin called a follicle. People are born with all of the hair follicles they are ever going to have. The average person has about one hundred thousand hair follicles. They begin to form on a fetus around the third month of pregnancy.
The part of the hair under the skin is known as the hair root. The hair sticking out from the skin is known as the hair shaft. The shaft is made up of dead cells that have been pushed up through the root. At the base of the hair root is a small ball-like formation called a bulb. This is where new cells are formed. These cells receive nutrition from the blood supply under the skin.
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