He also has a joint appointment in the Department of Environmental Health Sciences. His research interests are in the health effects of environmental exposures, such as air pollution, heavy metals (including lead, cadmium, and mercury), bisphenol-A, and noise, in aging populations. Health end points of interest are cardiovascular outcomes (hypertension, heart rate variability, homocysteine), lung function, and age-related disease (type-2 diabetes, hearing loss, osteoporosis, cataracts). Dr. Park received his MPH in environmental health from Seoul National University and his ScD in environmental epidemiology from the Harvard School of Public Health.