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the claim

Lack of ejaculation causes prostate cancer

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 4 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that lack of ejaculation causes prostate cancer?

No. Evidence directly refutes the claim that a lack of ejaculation causes prostate cancer; instead, large cohort studies and meta-analyses consistently show that higher ejaculation frequency is associated with a reduced risk of the disease.

Verdict: REFUTED · 0 sources for, 4 against · Last checked

The analysis

The retrieved literature (including large prospective cohorts like [0], clinical studies like [10], and comprehensive meta-analyses like [11]) consistently demonstrates an inverse relationship between ejaculation frequency and prostate cancer risk. Higher frequency is associated with a protective or lower risk effect, which directly contradicts the claim that a lack of ejaculation causes prostate cancer.

Evidence against · 4
Ejaculation Frequency and Risk of Prostate Cancer: Updated Results with an Additional Decade of Follow-up
2016
A large prospective cohort study found that higher ejaculation frequency throughout adult life was associated with a lower risk of prostate cancer.
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Rider, J., Wilson, K., Sinnott, J., Kelly, R., Mucci, L., & Giovannucci, E. (2016). Ejaculation Frequency and Risk of Prostate Cancer: Updated Results with an Additional Decade of Follow-up. doi.org. https://doi.org/10.1016/j.eururo.2016.03.027

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More against · 3
Reduction of Prostate Cancer Risk: Role of Frequent Ejaculation-Associated Mechanisms
2025
Mechanistic reviews indicate that frequent ejaculation helps suppress sympathetic nervous activity and reduce tension, thereby lowering prostate cancer risk rather than causing it.
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Hassan, M., Flanagan, T. W., Eshaq, A. M., Altamimi, O. K., Altalag, H., Alsharif, M., Alshammari, N., Alkhalidi, T., Boulifa, A., Jamal, S. E. E., Haikel, Y., & Megahed, M. (2025). Reduction of Prostate Cancer Risk: Role of Frequent Ejaculation-Associated Mechanisms. doi.org. https://doi.org/10.3390/cancers17050843

MP18-07 DOES HIGH EJACULATION FREQUENCY INCREASE THE RISK OF PROSTATE CANCER, AS HAS BEEN OBSERVED FOR BPH/LUTS?
2019
Clinical data show an inverse correlation where increased monthly ejaculation frequency is associated with a significantly decreased risk of prostate cancer.
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Song, P., Min, G., Kim, Y. U., Choi, J. Y., Ko, Y., Moon, K., & Jung, H. C. (2019). MP18-07 DOES HIGH EJACULATION FREQUENCY INCREASE THE RISK OF PROSTATE CANCER, AS HAS BEEN OBSERVED FOR BPH/LUTS?. doi.org. https://doi.org/10.1097/01.JU.0000555452.61486.db

Updated dose-response meta-analysis of sexual activity and prostate cancer risk.
2025
A recent updated meta-analysis confirms that higher ejaculation frequency demonstrates a significant protective effect against prostate cancer rather than being a cause.
Get citation
A, R., S, O., M, J., H, M., & J, P. (2025). Updated dose-response meta-analysis of sexual activity and prostate cancer risk.. doi.org. https://doi.org/10.1186/s12885-025-15410-3

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What does the evidence say?

The retrieved literature (including large prospective cohorts like [0], clinical studies like [10], and comprehensive meta-analyses like [11]) consistently demonstrates an inverse relationship between ejaculation frequency and prostate cancer risk. Higher frequency is associated with a protective or lower risk effect, which directly contradicts the claim that a lack of ejaculation causes prostate cancer.

also asked as
  • Does not ejaculating cause prostate cancer?
  • Is it true that infrequent ejaculation leads to prostate cancer?
  • Can a lack of ejaculation increase the risk of prostate cancer?
  • Does holding back ejaculation cause prostate cancer?
Receipt History
first checked04 Aug 2026
judged → REFUTED · 1204 Aug 2026
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