Soylent. A<unk>  is a drink, bar, soup, etc. intended as a substitute for a solid food, usually with controlled quantities of calories and nutrients. Some drinks come in powdered form or pre-mixed health shakes that can be cheaper than solid foods with identical health qualities. Medically prescribed<unk>  drinks include the body's necessary vitamins and minerals. Bodybuilders sometimes use<unk> s, not formulated for weight loss, to save food preparation time when eating 5-6<unk> s a day. In the European Union, weight-reduction<unk> s intended to either supplement <unk>  for weight control") or totally replace ("Total diet<unk>  for weight control") normal<unk> s are regulated as to their energy content, the nutrients they must provide, and information and advice on packaging by EU Directive 96/8/EC of 26 February 1996 on foods intended for use in energy-restricted diets for weight reduction. For example, a<unk>  must provide the minimum specified amounts of various vitamins and minerals and contain between 200 and 400 food calories of energy, of which no more than 30% can be from fat. Labeling information is prescribed, and packaging must provide a statement that the product should not be used for more than three weeks without medical advice in order to protect users from inadvertent malnutrition. In the United States, the term<unk> " is not defined in federal Food and Drug Administration regulations but generally refers to a calorie-controlled, prepackaged product in the form of a bar or beverage (ready-to-drink or powder), that is meant to replace a higher calorie<unk> .<unk>  products are usually fortified with more than 20 vitamins and minerals at "good" or "excellent" source levels.<unk>  products can be regulated as conventional or functional foods. In Canada,<unk> s are regulated by the Canadian Food Inspection Agency and must meet minimum calorie, protein and vitamin requirements, causing some American products to be rejected.
Meal replacement
Feingold diet
Nutrition transition
Protein supplement
Body modification
Sugar substitute
Plant-based diet
Artificial digestion