Energy requirement - Definition

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The energy requirement of an individual corresponds to the minimum amount of energy the body needs to function. The energy needs are only supplied by diet. Energy requirements are different depending on age, daily activity, or overall state of health. Infants and adolescents have higher energy needs than children and adults. Adult men have, on average, higher daily energy needs (about 2600 kcal) than women (2100 kcal). In nutrition, energy inputs are provided by carbohydrates, proteins, and lipids. The recommended percentage for humans is about 60% carbohydrates, 25% fat, and 15% protein.