Androgenetic alopecia (male pattern baldness) is by far
most common cause of hair loss amongst men and a serious problem for many women. For it to develop, three important components must come into play:1. A genetic predisposition for balding to occur.
2. The presence of male hormones.
3. Aging - enough time for
first two factors to occur.
Despite
common perception, familial baldness patterns are not completely reliable as predictors of future hair loss. The fact that your parent or grandparent exhibited a given pattern does not guarantee your hair loss development will be
same. However, if your father was completely bald and you begin to lose hair excessively at an early age, it's safe to assume you will develop extensive balding.
All normal men and women produce male hormones such as testosterone and DHT. These hormones have a useful role to play in both sexes but it is
fact that androgens occur in much higher concentrations in men that explains why this type of hair loss is more common in males.
The effect of these hormones on hair follicles is as follows:
1. High levels of an enzyme called 5-alpha-reductase occur in cells of
hair follicle.
2. This enzyme converts testosterone into DHT.
3. DHT causes
robust terminal hairs to miniaturize.