if your genitals dnt have enough blood u cant produce sperm?

Answer 1

If your genitals don't have enough blood, they rot, die and fall off. Same as any tissue that suffers from ischemia.

Blood supplies oxygen and nutrients to tissues. Without enough blood, the cells become malnourished and often have trouble surviving.

Therefore, if you don't have enough blood flow to your testes, your testes could suffer and die, thus not producing any sperm.