How Does Smoking Reduce Sperm Quality? Your fertility matters and smoking can silently harm it more than you think! Cigarette toxins cause oxidative stress, which can: Damage Think vapes and hookah are safer than cigarettes? Doctors warn these smoking alternatives may seriously impact fertility in both men and women. New study reveals vaping can shrink male testicles and cause sperm counts to plummet. : r teenagers Vaping and Fertility: The SHOCKING Truth You Need to Know