When the energy from the food is in short supply, the body breakdown its stored triglycerides and releases fatty acids for energy.
Energy is the ability to do work which exists in different forms. It follows the law of conservation which states that Energy is neither created nor destroyed, it can be transferred from one form to another.
Humans obtain energy from these molecules -carbohydrates, lipids, and proteins where the potential chemical energy of these molecules is transformed into other forms, such as thermal, kinetic, and other chemical forms of the energy.
These 3 molecules are called as fuel molecules. The energy of the food is expressed in Calorie(C). Major source of energy is Carbohydrates but when there is shortage in food supply lipids provides the energy.
So, when the energy from the food is in short supply, the body breakdown its stored triglycerides and releases fatty acids for energy.
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