Dr. Charnita Zeigler-Johnson is an epidemiologist and associate professor of population science in the Department of Medical Oncology and associate professor at the College of Population Health at Thomas Jefferson University, Philadelphia, Pennsylvania. Her research focuses on defining cancer risk factors and better understanding racial and socioeconomic disparities in the U.S. and international settings. She is a member of the leadership team for the African-Caribbean Cancer Consortium (AC3) and an active member of the Pennsylvania Cancer Coalition.