<unk> s mostly consist of liquid drinks, although very-low-calorie meals also exist. A<unk>  <unk>  or very-low-energy diet (VLED), also known as semistarvation diet and crash diet, is a type of diet with very or extremely low daily food energy consumption. Although previously described as a fad diet,<unk>  now have extensive scientific evidence supporting their use, it is defined as a diet of per day or less. Modern medically supervised<unk> s use total meal replacements, with regulated formulations in Europe and Canada which contain the recommended daily requirements for vitamins, minerals, trace elements, fatty acids, protein and electrolyte balance. Carbohydrates may be entirely absent, or substituted for a portion of the protein; this choice has important metabolic effects. Medically supervised<unk> s have specific therapeutic applications for rapid weight loss, such as in people living with obesity who need joint replacement surgery or before a bariatric surgery, using formulated, nutritionally complete liquid meals containing 800 kilocalories or less per day for a maximum of 12 weeks. Unmonitored<unk> s with insufficient or unbalanced nutrients can cause sudden death by cardiac arrest either by starvation or during refeeding.
Very-low-calorie diet
Low-carbohydrate diet
Low-protein diet
Plant-based diet
Low-fat diet
High-protein diet
Soft diet
Low-FODMAP diet