LONDON: For men with fertility problems, some doctors are prescribing a very conventional way to have a baby: more sex.

In a study of 118 Australian men with damaged sperm, doctors found that having sex every day for a week significantly reduced the amount of DNA damage in their patients' sperm. Previous studies have linked better sperm quality to higher pregnancy rates.

The research was announced yesterday at a meeting of the European Society of Human Reproduction and Embryology in Amsterdam.