The emergence of acne vulgaris in adolescents is associated with an increase in the secretion of the male hormone testosterone, an increase in its release from its associated protein in the blood serum, that is, the formation of free testosterone, and an increase in the conversion of the latter to dihydrotestosterone, in both boys and girls.     And the hormone Dihydrotestosterone increases the formation of sebum, which is a type of fat that accumulates in the skin and attracts a type of bacteria, Propionibacterium acnes. Advanced inflammatory acne   What also increases the formation of sebum is the intake…