ENERGY – our prime need from food



Energy from food is one of our prime needs for survival. As well as oxygen and water, without energy from food we would die. Every cell in the body requires a continuous supply. The macro-nutrients carbohydrates, fats, and protein are the sources for energy. When the body uses these for energy, the bonds between the atoms break and energy is released. Energy is expended within the body as electrical energy such as in nerve impulses, kinetic energy such as muscle movement, chemical reactions such as synthesis of new molecules; or the energy can be liberated as heat. (1,2)

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