Dietary energy supply

Dietary Energy Supply (die-tar-y en-er-gy sup-ply) refers to the amount of energy available for consumption in a person's diet. It is usually measured in kilocalories (kcal) or kilojoules (kJ) per day.

Etymology

The term "dietary" comes from the Greek word "diaita," which means "way of life," and it refers to the food and drink consumed by a person or group. "Energy" comes from the Greek word "energeia," which means "activity, operation," and it refers to the capacity to do work. "Supply" comes from the Old French word "souppleer," which means "fill up, make up for," and it refers to the provision of something that is needed or wanted.

Definition

Dietary energy supply is the food available for human consumption, usually expressed in kilocalories or kilojoules per person per day. It represents the total amount of food energy that is available to be consumed, not the amount that is actually consumed. The dietary energy supply includes all the food produced in a country, plus imports, minus exports, and changes in stocks.

Related Terms

• Calorie: A unit of measurement for energy. In nutrition, calories refer to the energy people get from the food and drink they consume, and the energy they use in physical activity.
• Kilojoule: A unit of energy equal to one thousand joules. It is used to express the energy value of foods.
• Diet: The kinds of food that a person, animal, or community habitually eats.
• Nutrition: The process of providing or obtaining the food necessary for health and growth.
• Metabolism: The chemical processes that occur within a living organism in order to maintain life.

See Also

• Food energy
• Basal metabolic rate
• Energy balance (biology)
• Energy homeostasis

External links

• Medical encyclopedia article on Dietary energy supply
• Wikipedia's article - Dietary energy supply

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