Dr. Dawn Hershman is professor of medicine and epidemiology at Columbia University. She also serves as leader of the Breast Cancer Program at the Herbert Irving Comprehensive Cancer Center at Columbia and is nationally recognized for her expertise in breast cancer treatment, prevention, and survivorship. A member of the Breastcancer.org Professional Advisory Board, Dr. Hershman also has conducted extensive research on breast cancer treatment and quality of life -- she has published more than 250 scientific papers and has received the Advanced Clinical Research Award in Breast Cancer from the American Society of Clinical Oncology and the Advanced Medical Achievement Award from the Avon Foundation. Dr. Hershman is also on the editorial board of the Journal of Clinical Oncology and is an associate editor at the Journal of the National Cancer Institute.
Listen to the podcast to hear Dr. Hershman explain:

how clinical trial results are used

how clinical trial results have changed the standard of care

why factors such as diet or exercise for reducing breast cancer risk are difficult to study in clinical trials

why some trials are stopped early because of good or not-so-good results