Prostate cancer remains one of the most common cancers in men, and one of the most survivable when it’s found early. Over the years, there’s been widespread interest in whether sexual activity, including masturbation or ejaculation frequency, might influence prostate cancer risk.
The short answer: research suggests there may be a link, but it’s more complex than it seems.
What the research shows
The idea that ejaculation could affect prostate cancer risk comes from long-term population studies, rather than direct clinical trials. These studies don’t prove cause and effect, but they do reveal patterns worth exploring.
Early studies
In 2009, a UK study (Dimitropoulou et al.) suggested that frequent masturbation in younger men (in their 20s) might be linked to a slightly higher risk of prostate cancer later in life, while frequent masturbation in older men (in their 50s) appeared to be protective.
Researchers proposed that younger men with high testosterone, and therefore higher libido, might already have a greater biological risk due to hormone sensitivity, rather than the act of masturbation itself.
More recent evidence
A larger US study published in European Urology (Rider et al., 2016) followed more than 30,000 men over 18 years. It found that men who ejaculated at least 21 times per month had a 20% lower risk of being diagnosed with prostate cancer than those who ejaculated 4-7 times per month.
The association was strongest for low to moderate grade prostate cancers, suggesting that more frequent ejaculation could play a role in keeping the prostate healthy - potentially by clearing out harmful substances or reducing inflammation.
Another analysis published in 2017 in The Journal of Sexual Medicine (Papa et al.) found that men who had higher ejaculation frequency in their 30s were less likely to develop advanced prostate cancer later in life, although the effect was modest and not seen in all age groups.
More recent meta-analyses (through 2022–2024) have continued to support the idea that ejaculation frequency may offer a small protective effect, but they agree that the evidence remains observational, not causal (Kokori, 2024).
Why might ejaculation help?
Researchers have proposed a few possible explanations:
- Reducing inflammation: Regular ejaculation may help flush out potentially harmful substances or reduce inflammation in the prostate.
- Regulating cell turnover: Ejaculation could help keep cell metabolism stable, reducing opportunities for abnormal cell growth.
- Hormonal balance: Regular sexual activity may help maintain a steady balance of androgens (male sex hormones), which are known to influence prostate cancer risk.
But there’s still no definitive proof. These findings show correlation, not cause - meaning that men who ejaculate more frequently might also lead generally healthier lifestyles.
What does this mean for patients and clinicians?
There’s no medical recommendation for ejaculation frequency as a form of prostate cancer prevention.
However, the evidence is reassuring:
- Masturbation and sexual activity are safe and normal parts of life.
- There’s no evidence that they increase risk at any age.
- Prostate cancer risk is more strongly linked to age, family history, ethnicity, and genetics than to sexual habits.
Encouraging men to understand their risk, attend screening when eligible, and act on new or unusual urinary symptoms remains the best way to protect health.
The takeaway
Ejaculation may have a small protective role in prostate health, but it’s not a proven way to prevent cancer. What we do know is that:
- Early detection saves lives.
- Regular health checks and awareness of changes matter more than any single lifestyle factor.
- Masturbation and sexual activity are healthy and safe.
Prostate cancer caught early is highly treatable. Empowering people with knowledge, not fear, is how we give them back time, choice and life.
References
Dimitropoulou, P., Lophatananon, A., Easton, D., et al. (2009). Sexual activity and prostate cancer risk in men diagnosed at a younger age. BJU International, 103(2), 178–185.
Rider, J. R., et al. (2016). Ejaculation frequency and risk of prostate cancer: updated results with an additional decade of follow-up. European Urology, 70(6), 974–982.
Papa, N. P., MacInnis, R. J., English, D. R., Bolton, D., Davis, I. D., Lawrentschuk, N., Millar, J. L., Pedersen, J., Severi, G., Southey, M. C., Hopper, J. L., & Giles, G. G. (2017). Ejaculatory frequency and the risk of aggressive prostate cancer: Findings from a case-control study. Urologic oncology, 35(8), 530.e7–530.e13. https://doi.org/10.1016/j.urolonc.2017.03.007
Kokori, Emmanuel & Olatunji, Gbolahan & Isarinade, David & Aboje, John Ehi & Ogieuhi, Ikponmwosa & Zainab, Doyinsola & Lawal, Abera & Woldehana, Muhammad & Nazar, & Godfred, Yawson & Scott, Nicholas & Aderinto, & Lawal, Zainab & Woldehana, Nathnael & Nazar, Muhammad Wajeeh & Scott, Godfred & Aderinto, Nicholas. (2024). Ejaculation Frequency and Prostate Cancer Risk: A Narrative Review of Current Evidence. Clinical Genitourinary Cancer. 10.1016/j.clgc.2024.01.015.