Young black women with large waist-to-hip ratios face decreased fertility, reports a new substudy from the Black Womenâ€™s Health Study.
Fecundity, or the level of fertility, was found to be lower in women with a waist-to-hip ratio of 0.8 or greater.
As a womenâ€™s weight increased, their fecundity decreased. Â Overweight women had a fecundity ratio (FR) of 0.89, obese woman a FR of 0.75, and very obese women a FR of 0.68.
BMI groups were defined as follows: overweight (BMI, 25-29), obese (BMI, 30-34) and very obese (BMI, 35 or greater).
Interestingly, a waist circumference of 33-35 inches was significantly associated with lower fecundity.
The substudy analyzed women from the primary study of 59,000 women. Â Women who were over the age of 40 or had diagnosed subfertility were not included in the analysis.
The study is the first â€śtime to pregnancyâ€ť study performed in black women. Â These preliminary results do agree with previous fertility studies in white women.