Exploring New Evidence on Weight Gain During Pregnancy and Perinatal Outcomes: A Workshop

Workshop

Prepregnancy BMI and Gestational Weight Gain: New Evidence, Emerging Innovations, and Policy Implications: A Workshop

September 4 - 5, 2025

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Discussion

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Agenda

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Materials

About

The guidelines on weight gain during pregnancy, last updated in 2009, lacked sufficient evidence to support weight gain recommendations for women in higher classes of obesity or those who are underweight. The increasing prevalence of obesity among women of reproductive age means that more women with obesity are becoming pregnant and they are doing so at higher body mass index (BMI) values. Both obesity and gaining more weight during pregnancy than recommended may exacerbate the potential for adverse outcomes during the perinatal period.

To address this, the National Academies of Sciences, Engineering, and Medicine hosted a two-day virtual workshop, September 4-5, to explore new evidence on gestational weight gain and the risk of adverse health outcomes for both mother and child, focusing on women with perinatal obesity and those who are underweight. Speakers addressed the relationship of social and economic variables to prepregnancy body mass index and perinatal weight gain, as well as the role of total diet and dietary patterns in weight gain and pregnancy-related outcomes.

New Opportunity for CDR Continuing Professional Education Units!

This workshop will award up to 5.0 CDR Continuing Professional Educational Units (CPEUs) for Registered Dietitian Nutritionists (RDNs) and Dietetic Technicians, Registered (DTRs), based on participation hours and learner assessments. Individuals who are unable to attend the live event may access the recording, which will remain online permanently. To secure CPEUs after the live event, interested parties must register, view the recorded webinar, and submit the completed assessment to the National Academies by October 31, 2025.

Contact

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gestationalweightgain@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

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Exploring New Evidence on Weight Gain During Pregnancy and Perinatal Outcomes: A Workshop

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Prepregnancy BMI and Gestational Weight Gain: New Evidence, Emerging Innovations, and Policy Implications: A Workshop