A new research has revealed that ejaculating at least 21 times a month significantly reduces a man’s risk of prostate cancer.

This is compared to those who release just four-to-seven times every four weeks, the Daily Mail reports.

The Harvard University study said that the findings are true irrespective of whether men achieved orgasm through masturbation or sex.

The research did not speculate on why ejaculation protects against prostate cancer. But, previous studies showed that it helps to rid the gland of cancer-causing substances and infections.

How the study was carried out

The researchers analyzed 31,925 healthy men who completed a questionnaire about their ejaculation frequency back in 1992.

READ ALSO: How to last longer in bed

The researchers also assessed the monthly ejaculation frequency in men aged 20-to-29, 40-to-49 and the year before the questionnaire was completed.

The men were then followed until 2010.

Some 3,839 of the study's participants were diagnosed with prostate cancer during the investigation.

Findings

The results showed that ejaculating at least 21 times a month significantly reduces the risk of prostate cancer in men aged 20-to-29 and 40-to-49.

READ ALSO: Woman reveals how an orgasm left her in a wheelchair

This is compared to ejaculating just four-to-seven times a month.

“We found that men reporting higher compared to lower ejaculatory frequency in adulthood were less likely to be subsequently diagnosed with prostate cancer,” the researchers indicated.

The findings were published in the journal European Urology.

Ejaculation was defined broadly and could be as a result of sex or masturbation.