LONDON – Scientists say being fat can be bad for the bedroom, especially if you’re a woman.

In a new study, European researchers found obese women had more trouble finding a sexual partner than their normal-weight counterparts, though the same wasn’t true for obese men, and were four times as likely to have an unplanned pregnancy. Fat men also reported a higher rate of erectile dysfunction.

Experts interviewed nearly 10,000 French men and women aged 18 to 69 about their sexual experiences and analyzed the results based on their Body Mass Index.

Obese women were 30 percent less likely than normal-weight women to have had a sexual partner in the last year. In comparison, there was little difference among obese men and normal-weight men as to whether they found a sexual partner.

The results were published online today in the medical journal BMJ. The study was paid for by several French government agencies.

People with a BMI of 18-24 are considered to have a healthy weight. Those with a BMI of 25 or above are considered overweight and people with a BMI of 30 or more are classified as obese.

Previous studies have found similar trends, but researchers were surprised by the discrepancy they found between the genders as to how excess weight affects peoples’ sex lives.

“Maybe women are more tolerant of tubby husbands than men are of tubby wives,” said Kaye Wellings, a professor of sexual and reproductive health at the London School of Hygiene and Tropical Medicine and one of the BMJ study authors.