Hillard Kaplan is Professor of Health Economics and Anthropology in the Economic Scientist Institute at Chapman University. He is the principal investigator of a longitudinal study of aging among Tsimane and Moseten Native South Americans in Bolivia. This research program spans 23-years and focuses on the impacts of physical activity, diet, inflammation, and chronic infection on cardiovascular disease, cognitive decline, and dementia risk. He collaborates with a multidisciplinary group of anthropologists, geneticists, cardiologists and neuroscientists.