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The topic I have chosen is Osteoporosis and how it is related to a deficiency of calcium Throughout my human nutrition course the importance for proper nutrition and adequate dietary supplements has been constantly emphasized Nutrition is the science that deals with food and how the body utilizes it All living things need food to live Food supplies energy which people need to perform certain actions and bodily functions Food also provides substances that the body needs to build and repair its tissues and to regulate its organs and organ systems SizerWhitneyFood provides certain chemical substances needed in order for a person to maintain good health These chemical substances are called nutrients Nutrients can perform three important functions They provide materials for building repairing or maintaining body tissues They help regulate body processes They serve as fuel to provide energy The body needs energy to maintain all its functions The foods we eat contain thousands of different chemicals Our body however only needs only a few dozen of these chemicals in order to stay healthy These are the nutrients that the body needs Nutrients are divided into six main groups they are 1 water 2 carbohydrates 3 fats 4 proteins 5 minerals 6 vitamins Water carbohydrates fats and proteins are called macronutrients Since macro means large the body needs these four nutrients in large amounts Minerals and vitamins are called micro nutrients micro means small The body needs only small amounts of these nutrientsWater is the most important nutrient The body needs water to carry out all of its life processes Watery solutions help dissolve other nutrients and carry them to all of the tissues The body also needs water to carry away waste products and to cool itself Adults should drink about 2 12 quarts of water every day Encarta The carbohydrates fats and proteins are needed because they have nutrients which provide energy Carbohydrates include all sugars and starches They are
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