To successfully manage your body weight and composition, it is necessary to realize that food is a fuel that provides energy to propel our bodies and to perform chemical reactions. Food when is ingested is turned into energy through a process called oxidation. the amount of energy provided by food is measured in calories. Food provides essential nutrients: carbohydrates, proteins, fats, vitamins, minerals and water that are vital to maintaining optimal health. |
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Foods are broken down into more simple chemical forms so that they can be absorbed through the intestinal walls and transported by the blood to the cells. Digestion is a series of chemical changes by which foods are broken down for absorption from the intestinal tract into the blood stream. |
| Absorbtion is the process by which nutrients in the form of amino acids from protein, glucose from carbohydrates and fatty acids from fats are taken into the blood stream to facilitate cellular metabolism. |
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