Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells in an effort to produce energy, maintain life, or stimulate growth.
Historically, people secured food through two methods: hunting and gathering, and agriculture. Today, most of the food energy consumed by the world population is supplied by the food industry.
Weight Watchers International is an international company based in the United States that offers various products and services to assist weight loss and maintenance. Founded in 1963 by Brooklyn homemaker Jean Nidetch, it now[update] operates in about 30 countries around the world, generally under names that are local translations of “Weight Watchers”. The core philosophy behind Weight Watchers programs is to use a science-driven approach to help participants lose weight by forming helpful habits, eating smarter, getting more exercise and providing support.
The term weight-watcher, in the same sense, had circulated publicly for several years before the company was formed.
Diet food (or dietetic food) refers to any food or drink whose recipe has been altered in some way to make it part of a body modification diet. Such foods are usually intended to assist in weight loss or a change in body type, although bodybuilding supplements are designed to aid in gaining weight or muscle.
In addition to diet other words or phrases are used to identify and describe these foods including light, zero calorie, low calorie, low fat, no fat and sugar free. In some areas use of these terms may be regulated by law. For example in the U.S. a product labeled as "low fat" must not contain more than 3 grams of fat per serving; and to be labeled "fat free" it must contain less than 0.5 grams of fat per serving.
Dietary fiber, dietary fibre, or sometimes roughage and ruffage is the indigestible portion of food derived from plants and waste of animals that eat dietary fiber.
There are two main components: