Leveraging Action to Support Dissemination of the Pregnancy Weight Gain GuidelinesLeveraging Action to Support Dissemination of the Pregnancy Weight Gain Guidelines Since 1990, when the last guidelines for weight gain during pregnancy were issued, the average body weight of women entering their childbearing years has increased considerably, with a greater percentage of these women now classified as overweight or obese. Women of childbearing age are also more likely to have chronic conditions such as high blood pressure or diabetes