The Mayo Clinic diet is a diet book first published in 1949 by the Mayo Clinic committee on dietetics as the Mayo Clinic diet manual. Prior to this, use of that term was generally connected to fad diets with no association to the clinic. The book is now published as The Mayo Clinic diet with a companion logbook, The Mayo Clinic diet journal.
The diet begins with a two-week period where five specific bad habits are replaced by five specific good habits. According to the authors this should result in a 6- to 10-pound loss during that 2-week period. The remainder of the program is based in large part on a combination of portion control and exercise/activity.