A diet containing less than 800 kcal day−1 specifically designed for the treatment of severe obesity. Usually, food substitution in the form of a drink made from powder and water is used. Ingredients in the powder are designed to provide nutrients in sufficient quantities to sustain health, and consist mainly of high quality protein such as egg whites, minerals, and vitamins. These diets require medical supervision and are not recommended for people with a body-mass index (BMI) of less than 30.
Subjects: Medicine and Health.