Male pattern hair loss or baldness (androgenetic alopecia) is a progressive thinning of the scalp resulting from genetic factors and the reduction in hair follicle size by the androgen hormone.*
High levels of androgen hormones in hair follicles lead to a shorter hair growth cycle, producing shorter and thinner strands of hair.*
Male pattern hair loss has a characteristic ‘M’ shape pattern of receding starting at the temples, typically affecting the crown, often leading to partial or complete baldness.*
Male pattern hair loss in men typically begins by the age of 20 years, with nearly 50 per cent of men affected by the age of 50.*
Up to 75 per cent of men will eventually experience some degree of baldness.* However, the highest rates of male pattern baldness are found in Caucasians, followed by African-Americans, with the lowest rates seen in Japanese and Chinese men.*