MedlinePlus at 21: A Website Devoted to Consumer Health Information.

This report is about the consumer health website MedlinePlus.gov. The latter website was created by the U.S. National Library of Medicine and features content produced by the U.S. National Institutes of Health. The report provides an overview, origin, content, and possible future evolution of the website. The report also spotlights the specific features of the MedlinePlus health topic on health literacy and discusses the PubMed Topic Specific Query on health literacy.