Jenn Simmons, MD, FACS, is a functional oncologist, bestselling author, and founder of Real Health MD and PerfeQTion Imaging. Philadelphia's first fellowship-trained breast surgeon, she left a two-decade surgical career after her own cancer diagnosis revealed the profound limitations of conventional care. Today she's on a mission to revolutionize breast health—challenging outdated screening, reframing cancer as a disease of root causes, and restoring agency to every woman on her journey. She is the author of The Smart Woman's Guide to Breast Cancer and host of the Keeping Abreast podcast-where she's changing not just minds, but lives.