About.com: What You Need to Know About the Mayo Clinic Diet - Offers health and safety information about the Grapefruit Diet often wrongly confused as the "Mayo Clinic" diet as compared to the one prescribed by the real Mayo Clinic dieticians.
EveryDiet.org: Mayo Clinic Plan - Details of the diet with a 3-day sample meal plan prescribed by the Mayo Clinic professionals.
Mayo Clinic Grapefruit Diet-Fiction! - Features the widely circulated email rumor touting "The Mayo Clinic Diet," a regimen of grapefruit, salads, vegetables, and generous amounts of fats and meats.
WebMD: The Grapefruit Diet - Article outlining the history of the Grapefruit Diet, which has also been mistakenly known as the Mayo Clinic Diet.
Wikipedia: Grapefruit Diet - Brief overview of the fad diet known as the Grapefruit Diet, which has been falsely attributed to the Mayo Clinic.
YourTotalHealth: Mayo Clinic Diet - Explains the Mayo Clinic Diet basics as well as its upside and downside in long-term weight management.