Dr. Yaghjyan is an Assistant Professor in the Department of Epidemiology. Dr. Yaghjyan completed her Doctoral Degree in Epidemiology at the University of Cincinnati in 2009. She has recently joined the Department after completing her postdoctoral training in Cancer Prevention and Control at Washington University in St. Louis and Siteman Cancer Center in 2013. Dr. Yaghjyan has considerable experience in cancer epidemiology and environmental epidemiology. Her research focuses on mammographic breast density and breast cancer risk, biological pathways from high breast density to breast tumors, including stem cell markers, stromal markers, and estrogen metabolism pathway genes, and the role of environmental exposures in breast carcinogenesis. Dr. Yaghjyan has field work experience on projects examining association of environmental chemicals with pubertal maturation and other health effects in young girls and effects of uranium on breast cancer risk. She is currently conducting several analyses using data from the Nurses’ Health Study Cohorts and NHANES/NHIS