Can Frequent Ejaculation Increase Prostate Cancer Risk?

Curiosity about how your sexual habits affect your long-term health is sensible. So let's talk about masturbation and prostate cancer plainly.

One question that keeps coming up is whether ejaculation frequency has any bearing on prostate health. Some worry it might increase risk. Others have heard the opposite. The truth about masturbation and prostate cancer, as ever, sits in the research.

In this blog, we'll walk you through what the science actually says about masturbation and prostate cancer, the other proven risk factors, and when it's time to stop Googling and speak to a doctor instead.

What research says about masturbation and prostate cancer

The prostate produces much of the seminal fluid. So, it’s natural to ask if ejaculation frequency affects it over time, and whether masturbation can cause prostate cancer.

Here's what the most recent research shows about whether or not does masturbation cause prostate cancer.

Cancers (Basel), 2025

This study examined how ejaculation frequency alters gene activity in prostate cells by analyzing tissue in lab settings, providing evidence relevant to debates around masturbation causes prostate cancer.

BMC Cancer, 2025–2026

Harvard's health professionals follow-up study

Clinical Genitourinary Cancer Review, 2024

This analyzed 11 studies with nearly 150,000 men to assess the frequency of masturbation and prostate cancer connections.

Does masturbation cause prostate cancer?

No, there is no credible scientific evidence that masturbation causes prostate cancer.

Not a single well-designed study has established masturbation as a cause or trigger of prostate cancer. The studies we've walked through have found no harmful association whatsoever.

So, can masturbation cause prostate cancer? The research is remarkably consistent in its answer: it cannot.

However, just because masturbation cancer appears linked in data doesn't automatically mean one directly causes the other.

The honest position, and the one science currently supports, is that masturbation causes prostate cancer is a myth, but "masturbation definitively prevents it" would also be an overstatement.

The real drivers of risk lie elsewhere entirely, and those are worth understanding.

Other proven risk factors for prostate cancer

• •Age:
  Risk rises sharply after 50 and is highest in men over 65. It's the single most significant risk factor across the board.
• •Family history:
  A father or brother diagnosed with prostate cancer roughly doubles your risk.
• •Genetics:
  Mutations in BRCA1, BRCA2, and Lynch syndrome genes are linked to elevated prostate cancer risk, particularly more aggressive forms.
• •Ethnicity:
  Black men in the UK face two to three times the risk compared to white or Asian men.
• •Hormonal influences:
  Higher lifetime exposure to androgens such as testosterone is associated with increased risk, as these hormones directly fuel prostate cell growth.
• •Diet and weight:
  Diets high in processed meat and full-fat dairy, combined with obesity, are consistently linked to higher risk and more aggressive disease.
• •Geography:
  Prostate cancer rates are markedly higher in Western countries compared to Asia, suggesting the role of lifestyle and environmental factors.

Lifestyle habits that may affect prostate health

You can't change your age or your genetics, but your daily habits are firmly within your control, and they do matter.

When to see a doctor for prostate health concerns?

Prostate cancer is most treatable when caught early, and early detection always begins with a conversation with your doctor. The difficulty is that in its early stages, prostate cancer often causes no symptoms at all.

Here are the prostate cancer symptoms and situations that warrant a prompt visit to your doctor:

• •Difficulty urinating:
  A weak or interrupted urine flow, straining to start, or a feeling that your bladder hasn't fully emptied.
• •Frequent urination:
  Particularly at night. Needing to get up multiple times to urinate is a common early signal.
• •Blood in urine or semen:
  It doesn't automatically mean cancer, but it always warrants investigation.
• •Pain or discomfort:
  Persistent pain in the lower back, hips, pelvis, or upper thighs without an obvious cause.
• •Erectile difficulties:
  Sudden or unexplained changes in sexual function.

Masturbation-cancer link explained

The research about does masturbation cause prostate cancer is clear. It does not.

Not a single credible study has established a harmful link between masturbation prostate cancer. If anything, evidence from multiple large-scale studies suggests that regular ejaculation may modestly reduce risk, though it is by no means a preventive measure on its own.