Date of Award

January 2021

Document Type


Degree Name

Master of Public Health (MPH)


School of Public Health

First Advisor

Yong Zhu


Introduction and BackgroundThere are increasing concerns about the effects of artificial lights on human health, including hormone-related disease and immune functions. In January 2020, the outbreak of COVID-19 disrupted everyone’s life, and people who infected have various severity. Thus, we want to analyze whether people exposed to different ambient light at night (LAN) levels make them more susceptible to COVID-19 for our summer research. Besides the effects of LAN on immune functions, we also discussed the association of LAN and multiple cancers in seven states of Northeastern U.S. We used similar statistical and geographic analysis methods and separate them into two chapters in this thesis. Chapter I will cover the cancer research and Chapter II will cover the COVID-19 research. Chapter II is a manuscript under review.


This thesis is restricted to Yale network users only. It will be made publicly available on 06/01/2022