Examining the fetal origins of obesity

The importance of breastfeeding cannot be overestimated, as it has been demonstrated to reduce the occurrence of excessive newborn weight gain and improve long term infant health. We should encourage breastfeeding for the natural opportunity it provides to avoid excessive feeding, in addition to its other benefits. And for newborns who are bottle fed, we should counsel the new mother on optimal feeding and strategies for comforting a crying baby, which will protect against overfeeding.

Regarding environmental exposures, this area of developmental programming is continuing to evolve at a rapid rate. Both animal research and epidemiological studies support the association of developmental exposure to BPA and other chemicals with obesity.

For the present, we should educate our patients regarding optimal nutrition prior to and during pregnancy, and the avoidance of potentially toxic or metabolically-active chemicals or drugs. We look forward to continued research into the mechanisms and preventive/therapeutic strategies for optimization of childhood and adult health.

Dr. Ross is professor of obstetrics and gynecology at the University of California, Los Angeles. Dr. Desai is assistant professor of ob.gyn. at the university. They reported having no relevant financial disclosures.