CLEAN OUT THE PIPES Having sex two to four times a week slashes the risk of prostate cancer
And blokes who first had sex at a young age are also more likely to suffer.
Boffins from Sichuan University, in China, analysed data on 55,490 men from 22 previous studies.
They found the tumour risk started to fall as sexual frequency increased but then rose again.
The optimum level was two to four times a week – when risk was 10 per cent lower than average.
Self-loving provided similar benefits.
The risk of prostate cancer increased by 10 per cent for every ten female partners a man had.
And it decreased by 4 per cent for every five-year delay in age at first intercourse.
Having a moderate amount of sex is thought to be healthy because it “cleans out the pipes”.
But having too much may be a sign of excessive sex hormones, which heighten cancer risk.
Sleeping around increases the risk of catching an STI, which is also linked to the disease.
Study leader Dr Jian Zhongyu said: “Men with fewer sexual partners, older age at first intercourse and moderate frequent ejaculation were associated with a significantly decreased risk of prostate cancer.
