Dr. Park focuses on health effects of various environmental pollutant exposures, such as air pollution, heavy metals, non-persistent chemicals (e.g., bisphenol-A and phthalates) and persistent organic pollutants (e.g., PFASs, PCBs and PBDEs), using epidemiologic approaches. His lab uses not only conventional approaches of ‘biology-based and hypothesis-driven’ single pollutant models but emerging novel approaches of multi-pollutant models. He recently developed a statistical approach to integrating multiple pollutants and pollutant mixtures (e.g. Environmental Risk Score). His lab also has a specific interest in gene-environment and nutrition (diet)-environment interactions to elucidate potential biological mechanisms, to identify vulnerable sub-populations to environmental exposure, and to provide intervention strategies. He is working with several ongoing cohort studies, such as Study of Women's Health Across the Nation (SWAN), Normative Aging Study, Multi-Ethnic Study of Atherosclerosis (MESA), Amish Family Diabetes Study (AFDS), and the National Health and Nutrition Examination Survey (NHANES).