10.25417/uic.12480671.v1 Hansoo Ko Hansoo Ko Three Essays on Health Economics and Policy University of Illinois at Chicago 2019 Health economics Health policy 2019-08-01 00:00:00 Thesis https://indigo.uic.edu/articles/thesis/Three_Essays_on_Health_Economics_and_Policy/12480671 My research focuses on a variety of topics on individual behavioral changes to external changes. By exploring how individual responses to policy interventions and environmental shocks, I aim to provide policy implications on how to promote health behavior and how to mitigate negative health impacts at an individual level. How individual responses to external shocks such as policy changes and environmental shocks has been less studied in the health economics and health policy literature. My research questions are important as a matter of informing implications for policy especially when the impacts of policy changes or environmental shocks on health are unclear.