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Men with a high sex drive live longer than their peers, a study suggests.

Japanese researchers surveyed and looked at health data for 8,500 men - who were mostly in their 60s - over seven years.

Those who said they were interested in sex at the start of the study had a 69 percent lower risk of dying from any cause by the end of the research.

Researchers believe a low sex drive is a sign of poor health overall - such as bad diet, obesity (béo phì) or other chronic diseases (bệnh mạn tính).

A healthy sex life has long been linked to positive mental and physical health - with experts recommending couples make love at least once or twice a week (làm tình ít nhất 1-2 lần/tuần).

Dr Kaori Sakurada, a medical expert at Yamagata University who led the study, said: 'Male lack of interest in sex may be related with an unhealthy lifestyle.

'In this study, men who reported a lack of sexual interest included more current smokers and cases of diabetes.

'Furthermore... the absence of [sexual] interest may affect a range of inflammatory, neuroendocrine and immune responses.'

Sex has a number of benefits, including lowering levels of stress and inflammation and boosting mood.