Energy balance

Energy balance is the relationship between energy input (calories consumed through food and drink) to energy output (calories used by the body for our energy requirements) being equal.

This relationship dictates whether weight is lost, gained, or remains the same.

The relationship between the energy consumed and the energy expended is shown in three sets of scales, showing a balanced weight, weight gain and weight loss.

Weight gained

If we consume more energy from foods than what we need, the unused energy will be stored as fat. When too much weight is gained this can increase our risk of developing obesity and other related disorders.

Weight stability

If we balance our energy from foods with the energy we use through activity this will result in a constant weight being maintained.

Weight lost

If we use more energy than we consume, this will lead to weight loss due to fat stores being used up quickly by the body.

Energy needs, percentages from macronutrients, exercise and energy balance explained.