Being obese impacts on sexual health, according to research. A new study reports that the rate of unplanned pregnancies is four times higher among single obese women than normal weight women, despite them being less likely to have been sexually active in the past year. Obese women are less likely to seek contraceptive advice or to use oral contraceptives. Obese men have fewer sexual partners in a 12 month period, but are more likely to suffer from erectile dysfunction and develop sexually transmitted infections than normal weight men.