Is male pattern baldness always genetic?

Pattern Hair Loss: Male patterned baldness, androgenetic alopecia, is a genetic disease that causes hair loss in certain areas of the scalp, in certain people, usually males. It may not be easy to figure out the genetic link, from either maternal or paternal side of the family. It occurs usually only when there are male hormones, and so young men get it, and older, post menopausal women, who no longer make estrogens.