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| Daily sex 'best for good sperm' | Daily sex 'best for good sperm' |
| (20 minutes later) | |
| Having sex every day improves sperm quality and could boost the chances of getting pregnant. | Having sex every day improves sperm quality and could boost the chances of getting pregnant. |
| In a study of men with fertility problems, daily ejaculation for a week cut the amount of DNA damage seen in sperm samples. | In a study of men with fertility problems, daily ejaculation for a week cut the amount of DNA damage seen in sperm samples. |
| Speaking at a fertility conference, the Australian researcher said general advice for couples had been to have sex every two or three days. | Speaking at a fertility conference, the Australian researcher said general advice for couples had been to have sex every two or three days. |
| Early results from the trial had already shown promising results. | Early results from the trial had already shown promising results. |
| Perhaps we have been blaming the women as couples get older but perhaps there's a contribution from the male because we're not behaving as we should be Dr David GreeningSydney IVF | Perhaps we have been blaming the women as couples get older but perhaps there's a contribution from the male because we're not behaving as we should be Dr David GreeningSydney IVF |
| But 118 men have now been tested and the benefits for sperm have become clearer. | But 118 men have now been tested and the benefits for sperm have become clearer. |
| Dr David Greening, from Sydney IVF, told delegates at the European Society for Human Reproduction and Embryology meeting that eight in ten men taking part showed a 12% drop in sperm DNA damage after the seven days. | Dr David Greening, from Sydney IVF, told delegates at the European Society for Human Reproduction and Embryology meeting that eight in ten men taking part showed a 12% drop in sperm DNA damage after the seven days. |
| Although there was a big drop in sperm numbers from 180 million to 70 million over the week, men were still within the normal "fertile" range. | Although there was a big drop in sperm numbers from 180 million to 70 million over the week, men were still within the normal "fertile" range. |
| Sperm also became more active over the seven days with a small rise in motility, he added. | Sperm also became more active over the seven days with a small rise in motility, he added. |
| Damage | Damage |
| The theory is that the longer sperm hang around in the testes the more likely they are to accumulate DNA damage and the warm environment could also make them more sluggish after a while. | The theory is that the longer sperm hang around in the testes the more likely they are to accumulate DNA damage and the warm environment could also make them more sluggish after a while. |
| Sperm come under attack by free radicals - small reactive molecules which can damage DNA and cause cell death - in the tube that stores and carries sperm away from the testes. | Sperm come under attack by free radicals - small reactive molecules which can damage DNA and cause cell death - in the tube that stores and carries sperm away from the testes. |
| Further work is needed to work out if daily sex for men without fertility problems has the same benefits but Dr Greening believes it is likely to be the case. | Further work is needed to work out if daily sex for men without fertility problems has the same benefits but Dr Greening believes it is likely to be the case. |
| He warns that having daily sex for too long - say a fortnight - would probably cut sperm numbers too much. | He warns that having daily sex for too long - say a fortnight - would probably cut sperm numbers too much. |
| But recommended "lots of sex daily" around the time the woman is ovulating. | |
| He said it was best to "keep the river flowing". | He said it was best to "keep the river flowing". |
| As men age they may not have as much sex as they did when they were younger, adding to the problem of infertility, Dr Greening told delegates. | As men age they may not have as much sex as they did when they were younger, adding to the problem of infertility, Dr Greening told delegates. |
| "We are designed to breed in our youth. | "We are designed to breed in our youth. |
| "Perhaps we have been blaming the women as couples get older but perhaps there's a contribution from the male because we're not behaving as we should be." | "Perhaps we have been blaming the women as couples get older but perhaps there's a contribution from the male because we're not behaving as we should be." |
| The findings may also have implications for couples undergoing IVF as men are commonly told to abstain from sex for a couple of days to try and boost sperm numbers. | The findings may also have implications for couples undergoing IVF as men are commonly told to abstain from sex for a couple of days to try and boost sperm numbers. |