Does Nicotine Affect Testosterone? Smoking and Vaping Evidence

By Noophoric Editorial Team Updated August 31, 2026

Nicotine does not have a simple, proven effect on testosterone. Some observational studies have found higher average testosterone levels in men who smoke cigarettes, but this does not mean smoking improves hormone health. Smoking exposes the body to thousands of chemicals, damages blood vessels, increases the risk of erectile dysfunction, and can impair reproductive health.

Evidence about vaping, nicotine pouches, and nicotine replacement products is even more limited. The health effects of a nicotine product cannot be judged by a testosterone number alone.

Does nicotine raise or lower testosterone?

The honest answer is that human evidence is mixed and does not establish a beneficial effect.

A 2016 systematic review and meta-analysis of observational studies found that men who smoked had higher average total testosterone than nonsmokers.¹ This result is often repeated online as proof that nicotine raises testosterone. That interpretation goes too far for several reasons:

The studies were observational, so they could not prove that smoking caused the difference.
Smokers and nonsmokers may differ in age, body weight, alcohol use, health, and other factors.
Cigarette smoke contains many chemicals besides nicotine.
A higher total testosterone result does not necessarily mean higher free testosterone or better hormone function.
The studies did not show that smoking improved symptoms, fertility, or sexual health.

The authors noted that cotinine, a nicotine metabolite, may slow testosterone breakdown. Even if that mechanism contributes to a higher blood concentration, it would not make smoking a safe or useful way to support testosterone.

What about vaping and nicotine pouches?

There is not enough high-quality human research to say that vaping or nicotine pouches reliably increase or decrease testosterone. Products differ in nicotine dose, absorption, flavorings, solvents, and contaminants, which makes broad claims difficult.

The Centers for Disease Control and Prevention states that most e-cigarettes contain highly addictive nicotine and that scientists are still learning about their short-term and long-term health effects. E-cigarette aerosol can contain cancer-causing chemicals, heavy metals, volatile organic compounds, and particles that reach deep into the lungs.²

A product can expose a user to fewer combustion chemicals than cigarettes and still be unsafe. Using cigarettes and e-cigarettes together does not protect health.

Smoking, erectile function, and circulation

Testosterone is only one part of sexual health. Erections depend heavily on vascular function. Smoking promotes blood vessel injury and is associated with erectile dysfunction.

A systematic review of prospective cohort studies found a higher risk of erectile dysfunction among current smokers compared with nonsmokers.³ This matters because a smoker may focus on an apparently normal or high testosterone result while missing a more important vascular risk.

If erectile problems are present, our guide to low testosterone and erectile dysfunction explains how hormones, blood vessels, medications, and mental health are evaluated together.

Nicotine and male fertility

Hormone levels do not tell the whole fertility story. Sperm concentration, movement, shape, DNA integrity, and a partner's reproductive health all matter.

The American Society for Reproductive Medicine reports fair evidence that semen parameters and sperm-function test results are lower in cigarette smokers than in nonsmokers, with dose-related effects. Evidence for electronic nicotine delivery systems is smaller, but the available data raise reproductive concerns and do not establish safety.⁴

Anyone trying to conceive should tell a fertility clinician about cigarettes, vaping, nicotine pouches, cannabis, anabolic steroids, and all medications or supplements.

Can quitting temporarily affect how you feel?

Nicotine withdrawal can cause irritability, restlessness, anxiety, low mood, sleep difficulty, concentration problems, increased appetite, and cravings.² Some of these symptoms overlap with complaints commonly blamed on low testosterone.

That overlap does not mean quitting has damaged testosterone. Withdrawal symptoms generally improve as the brain adapts. A clinician can help distinguish persistent hormonal symptoms from withdrawal, depression, sleep problems, or another condition.

Should you test testosterone because you use nicotine?

Nicotine use alone is not a reason for routine testosterone screening. Testing may be appropriate if you have compatible symptoms such as low libido, fewer spontaneous erections, infertility, loss of muscle mass, reduced body hair, unexplained anemia, or low bone density.

The Endocrine Society recommends diagnosis only when symptoms are present and testosterone is consistently low on repeat measurements.⁵ Read our guide to testosterone testing before interpreting one isolated result.

Nicotine replacement therapy is different from smoking

Nicotine replacement products such as patches, gum, or lozenges deliver nicotine without burning tobacco. They are not risk-free, but they are used to help people stop smoking and avoid continued exposure to combustion products.

Do not avoid an evidence-based quit aid because of an unproven testosterone claim. A physician or pharmacist can help choose a cessation approach based on smoking history, medications, pregnancy status, cardiovascular health, and prior quit attempts.

Frequently asked questions

Does vaping lower testosterone?

Current human evidence is insufficient to give a reliable yes or no answer. Vaping should not be considered safe or beneficial for hormones simply because its effect on testosterone is uncertain.

Does smoking raise free testosterone?

Some observational studies found higher total testosterone in male smokers, but results for free testosterone and other hormones have varied. These studies do not prove a health benefit or show that smoking treats testosterone deficiency.

Will quitting smoking improve erectile function?

Quitting removes an important vascular risk factor. The degree of improvement varies based on age, duration of smoking, diabetes, cardiovascular disease, medications, and other causes of erectile dysfunction.

Are nicotine pouches safer for testosterone?

There is too little direct research to compare their testosterone effects with smoking or vaping. They still deliver addictive nicotine and should not be used as a hormone strategy.

Bottom line

Nicotine and testosterone do not have a clear, clinically useful relationship. Observational findings of higher testosterone in smokers are not evidence that smoking improves health. Smoking increases vascular and sexual-health risks, vaping is not harmless, and newer nicotine products remain understudied. Decisions about quitting should be based on the full health picture, not an isolated hormone claim.

Sources

Evidence reviewed August 2026. This article is educational and is not a substitute for individualized medical diagnosis or treatment.