Protein is a macronutrient that is used for energy when the body does not have adequate kilocalorie intake.
What is Kilocalorie?
Kilocalorie (kcal) is a unit of energy measurement used to measure the amount of energy in food. It is also sometimes referred to as a Calorie, which is equal to 1,000 calories. Kilocalories are used to measure the amount of energy needed to raise the temperature of 1 kilogram of water by 1 degree Celsius.
When carbohydrates are low, the body is unable to use them for energy and must break down protein instead. This is done by converting the amino acids in protein into glucose in a process called gluconeogenesis. This glucose can then be used for energy by the body's cells. Therefore, when overall kilocalorie intake is inadequate and if carbohydrate stores are low, the body will use larger amounts of protein for energy.
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