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Energy and Calorie Equation
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What is the Energy (or Calorie) Equation?

Calorie Needs to Gain Weight - Estimate Calorie Needs
Harris Benedict Calorie Needs Formula - Katch-McArdle Caloric Needs Formula - Body Surface Area
Basal Metabolic Rate - Energy Equation - Energy Intake - Very Low Energy Diets
Calories Needed in Pregnancy - Low Calorie Sweeteners - Fat Replacers/Substitutes

The energy equation expresses how the body balances energy intake and expenditure.

The energy equation goes like this:

Change in stored energy = energy intake minus energy expenditure

In other words:

If energy intake equals energy expenditure, there will be no change in stored energy (body weight) and thus you will neither gain nor lose weight.

If energy intake exceeds energy expenditure, there will be an increase in stored energy (body weight) and thus you will gain weight.

If energy intake is less than energy expenditure, there will be a decrease in stored energy (body weight) and thus you will lose weight.

See also:
Body Weight: Energy & Calories

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