Many well-known hospitals, clinics and medical schools, including Johns Hopkins Medicine, recommend MedlinePlus as the first stop for reliable medical information on the Internet. The same sources give high ratings to the websites for Mayo Clinic, Centers for Disease Control, Family Doctor and Healthfinder. Other highly rated public and private websites include Cleveland Clinic, WebMD and RxList. Other reputable non-governmental sites are those certified by the Health On the Net Foundation that bear the red and blue HONcode seal.
Widely regarded as the premier online source for medical information, MedlinePlus is the most frequently cited resource for assisting consumers in locating authoritative health information. Created and maintained by the National Library of Medicine, a part of the National Institutes for Health, MedlinePlus offers a medical encyclopedia, drug and supplement information, a medical dictionary, patient education tutorials, and health information on more than 900 topics. There also provide carefully selected links to reputable medical resources on the Internet.
MedlinePlus posts a tutorial from the National Library of Medicine on how to evaluate medical information that appears on the Internet. Johns Hopkins Medicine suggests a simple ABC mnemonic for this purpose: Accuracy, Authority, Bias, Currency and Comprehension. It also recommends carefully evaluating commercial sites that may have a conflict of interest, and seeking out information that is less than three years old.