OnDemand: March 2025 Grand Rounds - A Ripple in the Epidemic: Developmental Origins of Obesity-A Ripple in the Epidemic: Developmental Origins of Obesity

Video Transcription

Video Summary

Dr. Jan Boone Heinonen, an epidemiologist at UCSF, discussed “A Ripple in the Epidemic: Developmental Origins of Obesity.” She explained the concept of developmental programming, where prenatal and early-life exposures can permanently alter physiology and metabolism, increasing obesity and cardiometabolic disease risk across generations.  <br /><br />The talk focused on two main prevention challenges. First, reducing maternal adiposity before and during pregnancy: current gestational weight gain guidelines do not address obesity class II and III well, and evidence suggests weight gain is highly variable, sometimes including weight loss. Intervention trials have shown only modest reductions in gestational weight gain and little clear clinical benefit. Preconception weight loss may help, but evidence is limited and may carry risks such as rebound weight gain during pregnancy.  <br /><br />Second, she reviewed childhood strategies to mitigate prenatal risk. Maternal obesity may affect children’s appetite regulation and metabolic function, potentially making traditional obesity prevention less effective in some subgroups. Physical activity may partially offset some programmed risks, suggesting a role for tailored or precision approaches.  <br /><br />She concluded that interrupting the intergenerational cycle of obesity will require better biomarkers, more interdisciplinary research, and attention to social context and weight stigma.

Keywords

developmental programming

obesity

epidemiology

maternal adiposity

gestational weight gain

prenatal exposure

intergenerational risk

childhood obesity prevention

weight stigma