Obesity Before Birth pp 355-365

Part of the Endocrine Updates book series (ENDO, volume 30)

The Obesogen Hypothesis of Obesity: Overview and Human Evidence



Obesity, like all complex diseases, is believed to have both a genetic and an environmental component. Data supporting an important role for environment in obesity come from the recent rise in the incidence of obesity over the past few decades. This review will present a new hypothesis for the etiology of obesity: the obesogen hypothesis. This emerging hypothesis states that susceptibility to develop obesity is due to exposure to environmental chemicals during development in utero and the first few years of life. Proof of principle for this hypothesis comes from smoking during pregnancy, which results in increased weight gain in children. There are examples using animal models for developmental exposures to chemicals with estrogenic activity [diethylstilbestrol, genistein (soy phytoestrogen) and bisphenol A (polycarbonate), tributyltin (a component of PVC)] and several pesticides resulting in increased weight gain later in life. An important aspect of the obesogen hypothesis is that obesity due to environmental exposure can be prevented by reducing exposure. Thus, this new hypothesis changes the focus from treatment to prevention of obesity.


Developmental programming Obesogens Developmental basis of disease Environmental chemicals Epidemiology studies Obesity set point Obesity prevention 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Division of Extramural Research and TrainingNational Institute of Environmental Health SciencesResearch Triangle ParkUSA

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