PROSTATE health can be a pretty awkward subject, so prepare to blush at this new research from Harvard University.

Scientists say frequent ejaculations could be the key to keeping the semen-producing gland healthy and avoiding cancer.

In fact, in a study of almost 32,000 men published in the journal of European Urology, researchers found high levels of sexual activity can reduce the risk of contracting prostate cancer by 33 per cent.

The optimum number is 21 ejaculations per month.

We’ve done a few quick calculations and that’s equal to 252 times annually — or almost 70 per cent of days in a year.

Experts aren’t exactly sure why ejaculation lowers the risk of prostate cancer, but they speculate it might help flush out cancer-causing toxins.

According to statistics from the University of Sydney, prostate cancer is the most common cancer diagnosed in Australia, and the third most common cause of cancer death.

It’s more common in older men, with 85 per cent of cases diagnosed in those over 65 years of age, so the results of this study are definitely worth taking on board.

Enjoyable as it may be, frequent ejaculation isn’t a magical one-stop shop.

The Harvard researchers pointed out an active sex life may be an indicator of good general health, which in itself is likely to lower the risk of cancer.

Therefore, it’s also important to maintain a good diet and exercise routine, and get regular check-ups from your doctor.

Gentlemen, you know what you need to do.

This article does not contain medical advice, and is intended to be general in nature.