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Obesity rates among women of reproductive age have risen in most developed countries. To examine the effects of changes in prepregnancy weight between consecutive pregnancies on complication rates in a second pregnancy, researchers analyzed data on body-mass index in 7897 women in northern Belgium who delivered their first two live-born singletons between 2009 and 2011 and who participated in a population-based cohort study by the Center for Perinatal Epidemiology.
Prevalence of overweight and obesity increased from 25% to 31% between first and second pregnancies. Interpregnancy weight retention was associated with increased risk during the second pregnancy for gestational diabetes and pregnancy-induced hypertension (even in women who were u…