Does Vaping Lower Testosterone? The Evidence So Far

TL;DR — Key Takeaways

• Mixed for testosteron, vaping doesn’t clearly lower it, and nicotine can even slightly raise it.
• The consistent, clearer finding: harm to sperm, vaping is linked to lower sperm count and quality.
• Nicotine harms blood vessels, which can worsen erections.
• Chronic nicotine use may disrupt hormonal balance over time.
• Human data on vaping specifically is limited, but it’s not good for reproductive or sexual health.

The evidence is mixed for testosterone, vaping doesn’t clearly lower it, and nicotine can even slightly raise it. The clearer, consistent finding is harm to reproductive health: vaping is linked to lower sperm count and quality. Nicotine also harms blood vessels, affecting erections, and chronic use may disrupt hormones. So vaping isn’t a proven testosterone-killer, but it’s bad for sperm and sexual health.

Vaping is new enough that the science is still catching up, but the picture that’s emerging isn’t flattering. Here’s what we actually know. (Part of our guide on what lowers testosterone; for the overview, our complete TRT guide.)

Does Vaping Lower Testosterone?

Not clearly, the testosterone evidence is mixed. Some research shows nicotine can slightly raise testosterone (one study found ~14% higher with oral nicotine), while vaping specifically hasn’t shown a clear increase or decrease. So “vaping crashes your testosterone” isn’t well supported. But testosterone isn’t the whole story, the reproductive harms are clearer.

Key fact: Vaping’s effect on testosterone is mixed, nicotine can even slightly raise it, but the consistent finding is harm to sperm count and quality.

What the Studies Show

• Testosterone: Mixed. Cigarette smokers sometimes show higher testosterone; vaping doesn’t clearly raise it, and nicotine’s effect is inconsistent.
• Sperm (the consistent finding): A 2020 study found e-cigarette and cigarette users had lower total sperm counts than non-users. A 2022 Andrology study found oral-nicotine users had ~14% higher testosterone but ~24% lower sperm count.
• Overall: Researchers haven’t proven nicotine clearly moves testosterone either way, but chronic use can disrupt hormonal balance, and the sperm/reproductive harm is real.

The Clearer Concern: Sperm, Blood Vessels, and Erections

Even if testosterone is a wash, vaping/nicotine hits the systems that matter for men’s sexual health:

• Sperm: Lower count and quality, important if you’re trying to conceive (see TRT and fertility).
• Blood vessels: Nicotine is a vasoconstrictor and harms endothelial function, which can worsen erections, relevant to erectile dysfunction.
• These effects can hurt sexual function regardless of your testosterone level.

Is Vaping Better Than Smoking for Testosterone?

Not clearly. Cigarette smoking sometimes shows higher testosterone (via nicotine’s effects on aromatase/SHBG), but smoking is far worse overall for vascular and lung health and sperm. Vaping avoids some combustion toxins but still delivers nicotine and other chemicals with their own risks and it’s too new to call safe. Neither is good for men’s health; this sits alongside the mixed picture in does smoking cigars increase testosterone.

Does Quitting Vaping Help?

Likely yes for reproductive and vascular health. Sperm quality and blood-vessel function tend to improve after quitting nicotine, which supports fertility and erections. Any hormonal disruption from chronic use may also settle. Quitting won’t necessarily “boost” testosterone (since the effect was never clearly negative), but it’s a clear win for sexual and overall health and frees you to focus on the real levers in how to increase testosterone naturally.

Conclusion

Does vaping lower testosterone? The evidence is mixed, vaping doesn’t clearly lower it, and nicotine can even slightly raise it. But that’s not the point: the consistent, clearer harm is to sperm count and quality, plus blood-vessel and erectile health from nicotine. Human data on vaping specifically is still limited, but it’s not good for your reproductive or sexual health. If you vape and care about fertility or erections, quitting is the smart move.

For the real causes and fixes, see what lowers testosterone and how to increase testosterone naturally and explore everything on men’s testosterone health at TRT NYC.

👉 Want to know where you stand? Check your testosterone with an at-home test kit and talk to a licensed provider about any low levels or fertility concerns.

Frequently Asked Questions

Does vaping lower testosterone?

Not clearly. The evidence is mixed, vaping hasn’t been shown to clearly lower testosterone, and nicotine can even slightly raise it. The clearer, more consistent finding is that vaping harms sperm count and quality, so its main risk is reproductive rather than a direct testosterone drop.

Does nicotine affect testosterone?

Inconsistently. Some studies show nicotine slightly raises testosterone (partly via effects on aromatase and SHBG), while others show no clear change. Chronic nicotine use may disrupt hormonal balance over time, but the evidence doesn’t show a clear, consistent testosterone-lowering effect.

Does vaping affect sperm and fertility?

Yes, this is the clearer harm. Studies link e-cigarette use to lower total sperm counts, and one found nicotine users had about 24% lower sperm count despite higher testosterone. If you’re trying to conceive, quitting vaping and nicotine is a sensible step.

Does vaping cause erectile dysfunction?

It can contribute. Nicotine is a vasoconstrictor that harms blood-vessel function, and healthy blood flow is essential for erections. So vaping may worsen erectile function through vascular effects, independent of testosterone levels, especially with heavy or long-term use.

Is vaping better than smoking for testosterone?

Not clearly. Cigarette smoking sometimes shows higher testosterone via nicotine’s effects, but it’s far worse for vascular, lung, and sperm health. Vaping avoids some combustion toxins but still delivers nicotine and chemicals with their own risks, and it’s too new to be considered safe.

Does quitting vaping help testosterone?

It mainly helps reproductive and vascular health, sperm quality and blood-vessel function tend to improve after quitting nicotine. Since vaping wasn’t clearly lowering testosterone, quitting may not “boost” it, but it’s a clear win for sexual and overall health.

Written by: TRT NYC Editorial Team: Last updated: July 2026 · Reviewed against: peer-reviewed research (see References).

Medical disclaimer: This article is for educational purposes only and is not medical advice. trtnyc.com is an independent informational resource, not a medical provider. Always consult a licensed healthcare provider about your testosterone or fertility.