TORONTO -- Women who are educated, married or heavy are more likely to have low sex drives, suggests a Canadian study that explored links between sexual problems and social and personal factors.

The research, published in the current edition of The Canadian Journal of Human Sexuality, found 55 per cent of respondents had at least one of three concerns about sexual function: low desire, pain during sex and infrequent orgasm during intercourse.

Unexpectedly, university-educated women are more apt to have low sex drives -- 48 per cent compared to 31 per cent among high school graduates. They are also less likely to have orgasms during intercourse.

"It may well be that highly educated women are different from less-educated women in many respects. Maybe they have higher standards . . . higher expectations and legitimately lower evaluations. They may be living much busier, much more stressful lives," said William Fisher, a professor of psychology and obstetrics and gynecology at the University of Western Ontario, a co-author of the paper.

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