x.com/wewarewareware/status/2101673244155892075
1 correction found
１日に１回は射精しないと前立腺がんになるリスクが
Medical sources do not say you must ejaculate once a day to avoid prostate cancer. The evidence is inconclusive, and the commonly cited research looked at associations across monthly frequency groups, not a daily minimum requirement.
Full reasoning
This overstates the science.
- There is no established medical rule that you need to ejaculate once per day. Cleveland Clinic says: “There isn't a set amount for how often you should ejaculate” and “there isn't evidence that shows not ejaculating causes health problems.” It also notes that the evidence is inconclusive.
- The frequently cited prostate-cancer research also does not support a daily threshold. Harvard Health’s summary of the large Health Professionals Follow-Up Study says the comparison was between men reporting 21 or more ejaculations per month and men reporting 4–7 per month. That is an observational association, not proof that failing to ejaculate every day causes prostate cancer.
So the post turns a tentative association into a much stronger causal claim — that not ejaculating at least once a day creates prostate-cancer risk — which is not what the evidence shows.
2 sources
- Ejaculation: How It Works, Complications & Disorders
How often should a man ejaculate? There isn't a set amount for how often you should ejaculate... But there isn't evidence that shows not ejaculating causes health problems. As the results are inconclusive...
- Ejaculation frequency and prostate cancer - Harvard Health
Compared to men who reported 4-7 ejaculations per month across their lifetimes, men who ejaculated 21 or more times a month enjoyed a 31% lower risk of prostate cancer.