An initiative of the Robert Wood Johnson Foundation Robert Wood Johnson Foundation
Expert Perspective

Evolution is an Important Part of the Journey

Published

November 13th, 2025

Share

Decades ago, most efforts to prevent childhood obesity focused on changing individual behaviors: what people ate or drank, or how active they were. But from the start, RWJF took a different approach. We focused on changing the policies and systems that shaped those choices, not the choices themselves.  

However, in the early years much of the field’s work was still narrow, often targeting the policies and systems most directly tied to diet and physical activity. As the research expanded, leading experts made the case for evolving the work to address the broader, broken systems that harm kids’ health. It became increasingly clear that preventing childhood obesity is about far more than calories, diet, and physical activity. It’s also about how safe communities are, whether parents can earn a living wage, whether kids have access to high-quality childcare and healthcare; if a neighborhood provides healthy, affordable food, and so much more.  

Together with our partners and peers, we listened, learned, and evolved. Over time, we came to better understand how so many policies place more value on some lives than others, often along the lines of race and class. That leads to fewer opportunities in jobs, education, and housing, and ultimately harms health. But since people created the laws and systems that shape these opportunities, it is possible to change them.

“It is essential to continue focusing on the upstream factors that contribute to childhood obesity and to recognize the complexity involved in addressing and unraveling them.”

“The non-medical drivers of health are the mechanisms that are driving our obesity epidemic: Access to healthy food, reliable transportation, safe places to play. This motivated us to create tailored solutions, like tools to help healthcare systems build screening programs to identify non-medical drivers in patients. This institutionalizes processes to address the underlying needs of people of different backgrounds.”

“The large health disparities today, in obesity and many other chronic diseases, are related to structural racism, a key legacy of slavery. So, this work is important for public health to know and understand.”

“It’s essential to bridge the gap between scientific research and policymaking by identifying critical research gaps and effectively communicating findings to advocates and policymakers.”

“Before this broader effort to work on childhood obesity, the field was focused on working with individual children and families, one at a time. Randomized treatment studies were published in psychology and medical journals. It was all about education and behavior change. This shared effort changed the narrative to include the role of environment and policies; an idea which has taken root and is well understood today.”

“The positive effects of policy change often go beyond those that are planned, leading to innovations beyond what was imagined during the advocacy process!”

“I am most proud and inspired by the work we did to understand and link childhood obesity with structural racism and then make that learning actionable.”

“Looking back, the thing I would tell myself at the beginning is that a good idea, an important methodology, takes time to implement and that it must evolve with the times, changing circumstances and technology.” 

Related Content

See All