From 2001 to 2018, Jeanne Rizzo guided Breast Cancer Prevention Partners, formerly Breast Cancer Fund, to adopt its bold mission to prevent breast cancer by eliminating our exposure to toxic chemicals and radiation linked to the disease. Under her leadership, this organization issued multiple scientific reports and advanced public policy changes in San Francisco, the state of California, and in federal law – including a federal ban on phthalate chemicals in toys, the launch of Biomonitoring California, and dramatic reductions in the amount of radiation used in mammograms.