Trends in Breast Cancer Incidence, by Race, Ethnicity, and Age Among Women Aged ≥ 20 Years - United States, 1999-2018

What is already known about this topic? Breast cancer accounts for 30% of all cancers diagnosed in women. What is added by this report? During 1999-2018, breast cancer incidence among women aged >= 20 years decreased an average of 0.3% per year, decreasing 2.1% per year during 1999-2004 and increasing 0.3% per year during 2004-2018. Incidence increased among non-Hispanic Pacific Islander women and women aged 20-39 years but decreased among non-Hispanic White women and women aged 50-64 and >= 75 years. What are the implications for public health practice? The U.S. Preventive Services Task Force currently recommends biennial mammography screening for women aged 50-74 years. Women aged 20-49 years might benefit from discussing potential breast cancer risk and ways to reduce risk with their health care providers.