March 22, 2019
Young woman holding a Pregnancy Test in her hands
Health News

Obesity and Fertility: A Bad Mix

by Berkeley Wellness  

Very obese couples have a harder time achieving pregnancy than their leaner counterparts, according to a study in Human Reproduction in February 2017.

Researchers from the National Institutes of Health looked at 500 couples trying for pregnancy and correlated their weight with how long it took them to conceive. Body mass index (BMI) was not associated with the time to pregnancy in either the women or their male partners when looked at individually. But couples in which both partners were very obese (BMI 35 or higher) took more than 50 percent longer to achieve pregnancy than other couples. The researchers controlled for factors such as age, physical activity, and frequency of intercourse.

In contrast, couples who were only modestly obese (BMI 30 to 35) did not take longer to conceive, nor did couples in which only one partner was very obese.

Also see Is Some Alcohol Okay in Pregnancy?