Kathryn J. Ruddy, M.D., studies long-term and late effects of cancer treatments, and how to best care for cancer survivors to enhance their quality of life and reduce symptoms. She collects patient-reported outcomes on clinical trials to better inform treatment decision-making. Dr. Ruddy also utilizes cohort studies to gather important survey data on the physical and psychosocial sequelae of breast cancer. Most of her research to date has focused on two understudied groups of breast cancer patients: men and young women.