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New research has suggested that having sex everyday can improve sperm quality and boost chances of getting pregnant.

According to Dr. David Greening, a specialist in reproductive endocrinology and infertility in Australia, daily ejaculation for a week cut the amount of DNA damage in sperm samples. He disclosed in a conference held recently at the European Society of Human Reproduction and Embryology in Amsterdam, that of 118 men he studied, eight out of ten showed a 12% drop in sperm DNA damage after a seven days period. Although there was a decrease in sperm quantity over the period, the sperm also became more active and increased in motility.

He reasoned that the longer the sperm remain in the testes, the more likely they will accumulate DNA damage. Also the warm environment could make the sperm more sluggish after a period of time. Sperm come under attack by small reactive molecules which can damage DNA and cause cell death. Dr Greening believes daily sex also benefit men without fertility problem but felt more work is needed to find out if this is the case.

He advised against having daily sex for too long a period, say a fortnight, as it would cut sperm quantity too much. He recommended “lots of sex daily’” around the time the woman is ovulating. He said it was best to “keep the river flowing”.

At the same conference, Professor Diana Vaamonde from the University of Cordoba Medical School in Spain, suspected there is a link between male infertility and long distance cycling. Studies have shown that men who participated in triathlon and did the most cycling training had the worst sperm quality. This could be caused by irritation and compression of the testes against the saddle and localised heat generated by tight clothing. The heat affected the sperm production.

So what should men do to maintain a good sex life and “keep the river flowing”?

Fertility starts with general good health. In addition to regular exercises, a balanced diet is important. Men’s diet should include fresh food, leafy vegetables, vitamins C and E, selenium, zinc and folic acid. These vitamins are natural antioxidants which fight free radicals that attack and destroy the membrane surrounding the sperm. Infertile men have a higher concentration of free radicals compared to fertile men. It is also advisable for men to limit drinking coffee to one or two cups a day and two ounces of alcohol twice every week as alcohol damages the sperm.

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