And many of them don’t even care.

A survey performed by a Harvard University researcher has revealed that four in ten United States women deemed sex as being painful, uninteresting or unsatisfying, but also that only 12 percent of them were worried about their sexual problems.

Results further showed that women aged between 45 and 64 were more prone to such dysfunctions than younger or older ones, with one in eight of the ones who fell into the aforementioned age category having reported a lack of sexual desire, while one in fifteen of them complained about orgasm issues.

Jan Shifren, lead author of the survey and an assistant professor of obstetrics and gynecology at Harvard Medical School in Boston, has published his findings in the November issue of Obstetrics & Gynecology.

His report was based on the claims of 31, 000 respondents and was sponsored by Boehringer Ingelheim GmbH, a German company who manufactures flibanserin, a currently experimental drug for pre- menopausal women who suffer from low sexual desire.

The study also informed that of the women with sexual dysfunctions, a quarter experienced low levels of arousal, while a fifth almost never reached an orgasm.

Back in 1999, another survey following sexual issues in women found that 43 percent of the respondents aged 18 to 59 suffered from dysfunctions related to their sexual desire or ability to achieve sexual climax.

This recent survey only factored in the interviewed women’s age, disregarding other conditions such as heart disease or diabetes, which might also play an important role when it comes to sexual satisfaction.