testosterone for Dummies
At all around week 7 in utero, the intercourse-related gene over the Y chromosome initiates the development of the testicles in male infants. The testicles develop testosterone.Ovarian or testicular tumors: Androgen-generating ovarian and testicular tumors can launch extra testosterone.提神及提升體能（對照睪酮缺乏患者體能較佳