In this section of their website, Medline Plus, a service of the U.S. National Library of Medicine and the National Institutes of Health, tackles the subject of diets. The information is divided up into half a dozen labeled boxes near the top of the page, and includes "Basics", "Research", "Learn More", and "Reference Shelf". Within these sections visitors can find links to information on "Nutrition", "Specific Conditions", "Journal Articles", "Dictionaries/Glossaries", and more. Many of the topics discussed throughout the categories is the safety of certain diets, such as the link "Nutrition for Weight Loss: What You Need to Know About Fad Diets", and "Are Detox Diets Safe?" found under the Teenagers category at the bottom of the page. Visitors interested in participating in clinical trials going on throughout the United States, can check out the links "ClinicalTrials.gov: Diet" and "ClinicalTrials.gov: Diet Therapy" under the category Clinical Trials.