To begin your pre-pregnancy self-assessment, the first step is to determine whether you are at a healthy weight. Many women can become pregnant regardless of their weight, but women with a body mass index (BMI) that is either too high or too low could encounter some difficulties while trying to become pregnant. A normal body mass index (BMI) is between 19 and 24. A BMI below 18.5 could lead to irregular menstrual cycles and in the worst case to anovulation, or lack of ovulation. On the other hand, a BMI that is too high can lead to an overproduction of insulin, which may lead to a hormonal imbalance that could potentially disrupt regular egg development. [3.Mayo Clinic Staff, see above.] A study has found that on top of having difficulties becoming pregnant women with a high BMI are more likely to develop pathologies during pregnancy. The risks of a perinatal pregnancy is increases progressively from a low to a high maternal body weight. While you might still be able to get pregnant with a higher BMI, the higher it is the smaller are your chances of conceiving. Women who are severely obese (with BMIs ranging from 35-40), may be 23 – 43% less likely to conceive, in contrast with women who have a BMI of 29 or below. If your BMI falls too far on either side of the spectrum (lower than 19 or higher than 24), consider evaluating your diet and eating habits to bring yourself closer into a safe range for conception.