New research has established that being fat can be bad in the bedroom, especially if you are a woman as obese ladies not only find it difficult to find a sexual partner as their normal-weight counterparts, they also bear a higher risk of an unplanned pregnancy.

On the other hand, overweight men do not seem to have a problem finding partners though they reported a higher rate of erectile dysfunction than their more normal weight counterparts, say the experts who interviewed more than 12,000 people in France aged between 18 and 69 and analyzed the results based on their BMI (Body Mass Index).

The results showed that obese women were 30 percent less likely to have found a sex partner in the last one year where as in the case of overweight men the difference was only marginal, thus indicating that women were probability more tolerant of tubby men than vice versa.

The results of the survey, published online on the medical journal BMJ, were based on the assumption that people with a BMI of 18-24 were considered of normal weight while those with 25 or above BMI were taken as overweight. Those with a BMI of 30 and above were categorized as obese.

Kaye Wellings, a professor of sexual and reproductive health at the London School of Hygiene and Tropical Medicine who worked on the BMJ study, believes that the problems faced by obese people were the result of a combination of factors like physical problems linked to obesity to psychological ones like low self-esteem and social prejudices.

She revealed that obese people are at a higher risk for diabetes, depression and urinary stress inconsistence - all problems that can hinder a good sexual life. They could also be suffering from muscular or skeletal problems that make sex a challenging proposition.

Analysis of the data also indicated that obese women were less likely to take birth control pills and therefore were more than four times more prone to unwanted pregnancy. It is medically proven that pregnant fat women and their children faced a bigger risk of post-natal complications.

However, the research found that obese men and women who had a partner indulged in sexual activity at about the same rate as normal weight people. In terms of preference, women sought out partners who were similar in body shape while only 40 percent of fat men wanted their women to be tubby.