New research suggests vaping can shrink your testicles and cause a lower sperm count PACE 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: Is vaping affecting your fertility? , While it's often seen as a safer alternative to smoking, medical research shows that vaping can impact both sperm and egg quality., At TFP Fertility, were here Fact Check: New Scientific Study Finds Vaping Can 'Shrink Male Testicles'?