Total Health :: essays research papers fc

maintenance is the science that deals with food for thought and how the form uses it. All living thingsneed food to live. The food supplies energy, which people need to finish certainactions. Food also provides substances that the body ineluctably to build and repair its tissuesand to cross its electric organs and organ systems.Food provides certain chemical substances needful in order for a person to maintain goodhealth. These chemical substances ar called nutrients. Nutrients arsehole perform threeimportant functions. They provide materials for building, repairing, or maintaining bodytissues. They help regulate body processes. They serve as fuel to provide energy. Thebody needs energy to maintain all its functions. People who do not reduce enough nutrients ar sometimes lazy and are unwilling to work.The foods we annihilate contain thousands of different chemicals. Our body, however, onlyneeds only a some dozen of these chemicals in order to stay healthy. These are th enutrients 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, thebody needs these four nutrients in large amounts. Minerals and vitamins are calledmicronutrients (because micro means small). The body needs only small amounts ofthese nutrients.Water is the roughly important nutrient. Our bodies can survive without other nutrients forseveral weeks, but we can only go without water for about one week. Water is needed ingreat amounts because the body consists largely of water. Between 50 and 75 percent of anormal persons body weight is made up of water. The body needs water to carry out allof its liveness processes. Watery solutions help dissolve other nutrients and carry them to allof the tissues. The body also needs water to carry away waste products and to smooth itself.Adults should drink abo ut 2 1/2 quarts of water all day.The carbohydrates, fats, and proteins are needed because they have nutrients whichprovide energy. Carbohydrates include all sugars and starches. They are the main source of energy forliving things. There are twain types of carbohydrates, simple and complex. Simplecarbohydrates include sugars and have a simple molecular structure. Complexcarbohydrates include starches and have a larger and more manifold molecularstructure. The structure consists of many simple carbohydrates linked together.Fats are a highly concentrated source of energy. All fats are composed of an alcoholic drinkcalled glycerol and substances called fatty acids. A fatty acid consists of a commodious chain ofcarbon atoms. There are three types of fatty acids.