Obesity and Maternal Weight Gain.

Pregnancy is a time when women may be receptive to health advice and interventions. This article considers the evidence for interventions to affect body weight in obese and overweight women delivered either or both pre- and post-natally. The increasing prevalence of obesity across the adult population has affected many sectors of society and increasing numbers of obese and overweight pregnant women are evident. Obesity in pregnancy is frequently associated with excessive gestational weight gains and increases the risk of developing adverse pregnancy outcomes in terms of both maternal and infant health. Pregnancy has been described as providing "a teachable moment" when women may be receptive to health advice. Some lifestyle approaches, largely incorporating strategies to alter dietary and physical activity to challenge excess body weight before and during pregnancy, have been developed and tested. While a few have shown promise with limited success in reducing body weight prior to pregnancy and post-natally, and minimising excessive weight gains during pregnancy, all interventions are not sufficiently robust and effective to justify routine inclusion in clinical practice. Weight management pre- and post-natally appears largely overlooked in usual care.