Young Survival Coalition (YSC) is an international nonprofit organization dedicated to supporting young women and other young adults diagnosed with breast cancer at age 40 and under — a group that faces unique challenges in diagnosis, treatment, survivorship, and long‑term quality of life. YSC provides tailored education, peer connection programs, local and virtual support networks, one‑on‑one peer mentoring, and large‑scale events to ensure no young adult faces breast cancer alone.