A look at male pattern baldness
A research study at a university in Norfolk, Virginia, found that 84 percent of men who suffer from hair loss are concerned with the loss. They described feelings of helplessness, vulnerability and jealousy of men with full, healthy hair. Men who had begun to lose hair in their early twenties were more likely to have problems with low self-esteem.
The male hair loss is due to a hormone imbalance. The medical term for male baldness is androgenetic alopecia. This term will help you understand the factors involved in excessive male pattern baldness. Androgen refers to one of the many hormones that control the appearance and development of male characteristics. One example is testosterone. Genetic refers to heredity, i.e. the inheritance of genes either from the mother or the father. Alopecia simply means hair loss. So you could say that male hair loss occurs due to male hormones that are influenced by genetic inheritance.
DHT (testosterone and 5‑alpha-reductase) is a naturally occurring hormone that helps in sexual development. Genetic switches cause changes in the hair follicles in certain men after puberty, at androgen-specific receptor sites in the follicles that regulate healthy hair growth. Since DHT levels increase with age in men, the binding to the follicle receptor sites increases. This leads to an imbalance in the biological processes of the more sensitive hair follicles. Slowly, the follicles begin to break down as DHT builds up at the site, causing the hair to become thinner and shorter again, and eventually become so thin and short that it is no longer visible.
The Hamilton-Norwood scheme divides male androgenetic hair loss into different stages, which are classified into seven stages. This schematized progression classification was developed in 1951 by James Hamilton. O’Tar Norwood modified and extended it in 1975.
Men lose their hair in different ways depending on their genetic predisposition. In the case of male hair loss, a retraction at the temples, a loss on the upper head and a thinning of the hair over a large area can usually be observed. These patterns are identified on the so-called Norwood scale, which classifies different types of hair loss.