This KFF Health Tracking Poll/KFF Tracking Poll on Health Information and Trust was designed and analyzed by public opinion researchers at KFF. The survey was conducted September 23-29, 2025, online and by telephone among a nationally representative sample of 1,334 U.S. adults in English (n=1,255) and in Spanish (n=79). The sample includes 1,026 adults (n=64 in Spanish) reached through the SSRS Opinion Panel either online (n=1,004) or over the phone (n=22).