Before and after hair transplant photos

What causes male-pattern hair loss?

Hair grows from follicles below the surface of the skin and a single hair will normally last between three and five years before it’s shed, and a new hair grows from that follicle.

Generally, male-pattern baldness to varying degrees by the age of 30. Hair grows from follicles below the surface of the skin and a single hair will normally last between three and five years before it’s shed, and a new hair grows from that follicle. This cycle continues throughout life.

Male pattern baldness occurs when a modified form of testosterone, Dihydrotestosterone (DHT), begins to attack the hair follicles. This results in the follicles miniaturising and producing thinner and shorter hairs. As your thicker hairs fall out and are replaced by these weaker ones, you start to thin out on top. Whether you go through this process depends on your genes. If they are coded to resist DHT, you’ll keep your hair. If they are coded to be susceptible, you’re in trouble. The follicles on the back and sides are usually coded to fend off Dihydrotestosterone, which is why it’s common for men to keep their hair there. The genes for hair loss can come from either parent.
Male-pattern hair loss is progressive, so if you start losing your hair happens at an early age, the overall effect is likely to be a very bald pate.

source: The Telegraph