Can drinking alcohol to excess lower sperm count? smoking & drugs too?

Yes to all three: Moderate to heavy alcohol drinking, smoking or chewing tobacco, and drugs including marijuana and opiates, both illegal and prescription painkillers, can all reduce sperm numbers and/or quality.

Yes: Alcohol, smoking and drugs can decraese sperm count. Smoking tobacco not only to decrease the quality of a woman’s eggs, but it is thought to reduce a man’s sperm count. Illicit drugs like Cocaine and marijuana have been demonstrated to affect sperm count.