What is already known about this topic? Informal, unpaid caregivers provide important support to family members, friends, and the health care system and might compromise their own health to provide this support.
What is added by this report? During 2015–2017, approximately 20% of respondents to the Behavioral Risk Factors Surveillance System survey were classified as caregivers. Nearly 20% of caregivers reported fair or poor health, with wide interstate variation, ranging from 11.7% to 34.4%.