Debunked. Large studies (Harvard HPFS, 2016) and a 2025 meta-analysis find higher ejaculation frequency (including masturbation) linked to lower prostate cancer risk—about 20% lower for ≥21 times/month vs 4–7. Masturbation alone shows no significant risk increase. No evidence it harms prostate health; the stagnation hypothesis suggests frequent ejaculation may help clear potential carcinogens. Observational data only, but science does not support the claim.
Debunked. Large studies (Harvard HPFS, 2016) and a 2025 meta-analysis find higher ejaculation frequency (including masturbation) linked to lower prostate cancer risk—about 20% lower for ≥21 times/month vs 4–7. Masturbation alone shows no significant risk increase. No evidence it harms prostate health; the stagnation hypothesis suggests frequent ejaculation may help clear potential carcinogens. Observational data only, but science does not support the claim.