Dr. Bertrand’s research focuses primarily on the epidemiology of breast cancer, with an emphasis on understanding racial disparities in incidence and outcomes. She is currently a co-Investigator with the Black Women’s Health Study (BWHS), a prospective cohort study of over 59,000 African American women begun in 1995. Dr. Bertrand is also Principal Investigator of a BWHS study to evaluate risk factors for high mammographic density, a strong independent predictor of breast cancer, and the role mammographic density and other risk factors may play in tumor aggressiveness. Other areas of research interest include risk factors for non-Hodgkin lymphoma and multiple myeloma.