According to WebMD, other common causes of the condition include:
Hormones: A hormone called DHT causes hair follicles to shrink. As the hair follicles become too small, hair can no longer grow in them.
Stress: Stress may cause hair loss by increasing the production of sex hormones, notably androgens, in the body.
Age: Most white men develop some degrees of baldness, according to their age and genetic makeup. Male pattern baldness affects up to half of all white men by the age of 50 years and up to 80 percent of men in the same group by the age of 70 years.