Lecture 1 - Nutrition Food You Chapter 1 Why is Nutrition...

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23:10 Chapter 1 Why is Nutrition Important? Nutrition contributes to wellness o Wellness: the absence of disease Physical, emotional and spiritual o Critical components of wellness Nutrition  glPhysical Activity Diseases in which nutrition plays some role o Osteoporosis o Osteoarthritis o Cancer Strong Nutritional component o Type 2 diabetes o Heart Disease o High blood pressure o Bossiest Nutritional deficiencies or toxicities o Pellagra o Scurvy
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o Iron deficiency Nutrients: the chemicals in food that are critical to human growth and function o Six major groups Macronutrients: Nutrients required in relatively large amounts o Provide energy to our bodies o Crabs, fats and oils, proteins Micronutrients: nutrients required in smaller amounts o Carbohydrates Primary source of fuel for the body, especially for the brains o Carbs are found in grains (wheat and rice), vegetables, fruits, legumes Fats and Oils An important energy source during rest or low intensity exercise o Found in butter, margarine, vegetable oils Proteins Proteins are important for: o Building cells and tissues o Maintaining bones o Repairing damaged structures o Regulating metabolism
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Protein sources: meats, dairy products, seeds, nuts, legumes Vitamins Vitamins: compounds containing carbon that assist regulating body process Functions o o Supports immune functions o Assist with energy release Two groups o Fat soluble A, D, E, K o Water soluble C, B Minerals Minerals: substances that do not contain carbon and are required for body  processes Functions o Energy production o Fluid regulation o Bone structure Water Water is a critical nutrient for health and survival Water is involved in many body processes
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o Fluid balance o Nerve impulses o Muscle contractions o Nutrient transport o Removal of wastes o Chemical reactions A Healthful Diet Adequate Moderate Balanced Varied Adequate An adequate diet provides enough o Energy o Nutrients o Fiber o Vitamins A diet adequate in many nutrients can still be inadequate in a few nutrients  Moderate A moderate diet contains the right amounts of food o Maintaining proper weight
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o Optimizing body functions  Balanced  A balanced diet contains the right combinations of foods to provide the  proper balance of nutrients o Example:  Calcium rich foods versus iron rich foods Variety Variety: eating many different types of foods each day o A healthful diet is not based on only one or a few types of foods Determining Nutrient Needs
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This note was uploaded on 02/22/2009 for the course NATS 104 taught by Professor Lewis during the Spring '08 term at Arizona.

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Lecture 1 - Nutrition Food You Chapter 1 Why is Nutrition...

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