For every BMI unit over 29, chance of pregnancy fell by 4%.
In the study, they found that for every BMI unit over 29, the chance of pregnancy was reduced by four percent, when compared to women with BMI’s between 21 to 29. Women who were severely obese, with BMI’s between 35 to 40, had a 23% to 43% less chance of achieving pregnancy compared to the below 29 BMI women.
It’s important to mention that the researchers did not prove that losing weight will increase the chances of pregnancy. However, it would seem that losing weight could help. Entering pregnancy at a normal weight is healthier in any case, and can reduce the risk of some pregnancy complications, like gestational diabetes. (A BMI between 25 to 29.9 before pregnancy doubles the risk, while a BMI over 30 triples the chance.)
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at 3:30 AM on Nov. 3, 2010