A recent scientific study reveals that vaping may reduce sperm count and shrink testicles. The study's authors noted, It should be considered that although [e cigarette] liquid has been introduced as harmless in Let's talk vaping. Vaping might feel like a safer choice than smoking, but when it comes to your reproductive health, it's certainly not risk free. From disrupting hormones and ovulation in women to Is Vaping Bad For You? Q&A: "Does Smoking Weed or Vaping Affect Sperm?"