Dr. Jonathan L. Blitstein is a public health psychologist and research methodologist with 15 years of experience in the design and evaluation of community-based, health promotion projects. His research focuses on understanding the role of social and structural determinants of health and is aimed at reducing the impact of chronic disease among vulnerable populationsDr. Blitstein has provided evaluation technical assistance to community organizations working to improve healthy food access and modify the built environment to reduce obesity.