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Overweight and obesity are increasing worldwide and present a significant health risk during pregnancy and childbirth. Research efforts have focused on limiting gestational weight gain (GWG). The study by Beyerlein and colleagues evaluated the effect of gestational weight loss (GWL) on pregnancy outcomes.
Beyerlein and colleagues describe a population-based retrospective cohort study, involving maternal and infant data from 819 905 singleton pregnancies. After excluding women with missing data (81 371), with unknown date of booking (28 959) and where GWG was considered excessive according to Institute of Medicine (IOM) recommendations (264 252), a final sample of 445 323 was available for analysis.
Women were categorised according to body mass index (BMI) at their booking visit, using standard classifications into underweight, normal …
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