Male Athletes Who Consider Taking Synthetic Steroid Testosterone Hormones to Add

Multiple Choice

Male athletes who consider taking synthetic steroid testosterone hormones to add muscle are warned that this may shrink the testes.Why would this effect occur?

A) this is the natural effect of testosterone;it normally shrinks testes.
B) synthetic chemicals act differently than natural hormones.
C) a guilt reaction in the brain causes the opposite hormone action.
D) testosterone converts to dihydrotestosterone that has the opposite effect.
E) the pituitary detects high levels of testosterone in the bloodstream and,not knowing that it is not self-produced,reduces FSH and LH.