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An Overview of Nutrition

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Presentation on theme: "An Overview of Nutrition"— Presentation transcript:

1 An Overview of Nutrition
Copyright 2005 Wadsworth Group, a division of Thomson Learning

2 Nutrition in Your Life Nutrition
The science of foods and the substances they contain Copyright 2005 Wadsworth Group, a division of Thomson Learning

3 Nutrition in Your Life Food Derived from plant or animal sources
Provide energy and nutrients Used by the body for maintenance, growth, and repair Copyright 2005 Wadsworth Group, a division of Thomson Learning

4 Nutrition in Your Life Diet The foods one consumes
The quality of which affects the risk of chronic diseases Copyright 2005 Wadsworth Group, a division of Thomson Learning

5 Food Choices Personal preference Habit Ethnic heritage or tradition
Social interactions Availability, convenience, economy Copyright 2005 Wadsworth Group, a division of Thomson Learning

6 Food Choices Positive and negative associations Emotional comfort
Values Body weight and image Copyright 2005 Wadsworth Group, a division of Thomson Learning

7 Food Choices Nutrition and health benefits Functional foods
Provide health benefits beyond their nutrient contributions Ex. Whole foods, fortified foods Copyright 2005 Wadsworth Group, a division of Thomson Learning

8 The Nutrients Energy defined Nutrient defined
Copyright 2005 Wadsworth Group, a division of Thomson Learning

9 The Nutrients Composition of foods Six classes of nutrients
Nonnutrients Copyright 2005 Wadsworth Group, a division of Thomson Learning

10 Body Composition Copyright 2005 Wadsworth Group, a division of Thomson Learning

11 The Nutrients Chemical composition of nutrients
Inorganic vs. Organic nutrients Copyright 2005 Wadsworth Group, a division of Thomson Learning

12 The Nutrients Inorganic nutrients Minerals Water
Copyright 2005 Wadsworth Group, a division of Thomson Learning

13 The Nutrients Organic nutrients Carbohydrates Lipids Proteins Vitamins
Copyright 2005 Wadsworth Group, a division of Thomson Learning

14 The Nutrients Copyright 2005 Wadsworth Group, a division of Thomson Learning

15 The Nutrients Essential nutrients Macronutrients vs. micronutrients
Copyright 2005 Wadsworth Group, a division of Thomson Learning

16 Energy-Yielding Nutrients
Calories and kilocalories Copyright 2005 Wadsworth Group, a division of Thomson Learning

17 Energy-Yielding Nutrients
Energy from foods Energy density Copyright 2005 Wadsworth Group, a division of Thomson Learning

18 Energy Density Copyright 2005 Wadsworth Group, a division of Thomson Learning

19 Energy-Yielding Nutrients
Energy in the body Energy for activity Stored energy Other roles of energy-yielding nutrients Copyright 2005 Wadsworth Group, a division of Thomson Learning

20 Vitamins Organic Not energy-yielding Essential
Water-soluble vs. fat-soluble Vulnerable to destruction Copyright 2005 Wadsworth Group, a division of Thomson Learning

21 Minerals Inorganic Not energy-yielding Essential Indestructible
Copyright 2005 Wadsworth Group, a division of Thomson Learning

22 Water Inorganic Not energy-yielding Essential
Copyright 2005 Wadsworth Group, a division of Thomson Learning

23 The Science of Nutrition
Human genome Nutritional genomics Copyright 2005 Wadsworth Group, a division of Thomson Learning

24 Nutrition Research The Scientific Method Hypothesis vs. Theory
Experimental group vs. control group Randomization Sample size Copyright 2005 Wadsworth Group, a division of Thomson Learning

25 Copyright 2005 Wadsworth Group, a division of Thomson Learning

26 Nutrition Research The Scientific Method Epidemiological studies
Laboratory-based studies Human intervention or clinical trials Copyright 2005 Wadsworth Group, a division of Thomson Learning

27 Nutrition Research Copyright 2005 Wadsworth Group, a division of Thomson Learning

28 Nutrition Research Copyright 2005 Wadsworth Group, a division of Thomson Learning

29 Copyright 2005 Wadsworth Group, a division of Thomson Learning

30 Nutrition Research The Scientific Method Placebo effect
Blind experiment Double-blind experiment Copyright 2005 Wadsworth Group, a division of Thomson Learning

31 Nutrition Research The Scientific Method Correlations and causes
Positive correlation vs. negative correlation Replication Peer review Copyright 2005 Wadsworth Group, a division of Thomson Learning

32 Nutrition Research Research Vs. Rumors Scientific validity
Copyright 2005 Wadsworth Group, a division of Thomson Learning

33 Dietary Reference Intakes
Estimated Average Requirements Recommended Dietary Allowances Adequate Intakes Tolerable Upper Limits Copyright 2005 Wadsworth Group, a division of Thomson Learning

34 DRI Copyright 2005 Wadsworth Group, a division of Thomson Learning

35 DRI Copyright 2005 Wadsworth Group, a division of Thomson Learning

36 Energy Recommendations
Estimated Energy Requirement Acceptable Macronutrient Distribution Ranges Carbohydrate: 45% - 65% Fat: 20% - 35% Protein: 10% - 35% Copyright 2005 Wadsworth Group, a division of Thomson Learning

37 Energy Recommendations
Copyright 2005 Wadsworth Group, a division of Thomson Learning

38 Using Nutrient Recommendations
Estimates of energy & nutrient intakes apply to healthy people Recommendations are NOT minimum requirements Recommendations are NOT optimal for all people Copyright 2005 Wadsworth Group, a division of Thomson Learning

39 Using Nutrient Recommendations
Recommendations should be met by consuming a varied diet Recommendations apply to average daily intakes Each DRI category serves a unique purpose Copyright 2005 Wadsworth Group, a division of Thomson Learning

40 Comparing Nutrient Recommendations
U.S. & Canada: DRI Committee International: FAO and WHO Copyright 2005 Wadsworth Group, a division of Thomson Learning

41 Nutrition Assessment Malnutrition Undernutrition vs. overnutrition
Copyright 2005 Wadsworth Group, a division of Thomson Learning

42 Nutrition Assessment of Individuals
Historical information Anthropometric data Physical examination Laboratory tests Copyright 2005 Wadsworth Group, a division of Thomson Learning

43 Nutrition Assessment Copyright 2005 Wadsworth Group, a division of Thomson Learning

44 Nutrition Assessment of Individuals
Primary deficiency vs. secondary deficiency Overt symptoms Subclinical deficiency Covert symptoms Copyright 2005 Wadsworth Group, a division of Thomson Learning

45

46 Nutrition Assessment of Populations
National nutrition surveys National health goals Healthy People 2000 Healthy People 2010 Copyright 2005 Wadsworth Group, a division of Thomson Learning

47 Nutrition Assessment of Populations
Copyright 2005 Wadsworth Group, a division of Thomson Learning

48 Copyright 2005 Wadsworth Group, a division of Thomson Learning

49 Diet and Health Copyright 2005 Wadsworth Group, a division of Thomson Learning

50 Diet and Health Copyright 2005 Wadsworth Group, a division of Thomson Learning

51 Risk Factors for Chronic Diseases
Risk factors persists Risk factors cluster Risk factors in perspective Copyright 2005 Wadsworth Group, a division of Thomson Learning

52 Nutrition Information and Misinformation
Not everything on the Internet is true!! Determination of the reliability of a website Not everything on the news is accurately reported!! Copyright 2005 Wadsworth Group, a division of Thomson Learning

53 Nutrition Information and Misinformation
American Dietetic Association (ADA) Registered dietitian (RD) Dietetic technician, registered (DTR) Copyright 2005 Wadsworth Group, a division of Thomson Learning

54 Copyright 2005 Wadsworth Group, a division of Thomson Learning

55 Nutrition Information and Misinformation
Finding credible information Government health agencies Volunteer health agencies reputable consumer groups Reputable consumer groups Copyright 2005 Wadsworth Group, a division of Thomson Learning

56 Nutrition Information and Misinformation
Finding credible information Professional health organizations Professional journals Copyright 2005 Wadsworth Group, a division of Thomson Learning

57

58 Copyright 2005 Wadsworth Group, a division of Thomson Learning

59 Nutrition Information and Misinformation
Identifying misinformation Copyright 2005 Wadsworth Group, a division of Thomson Learning

60 Copyright 2005 Wadsworth Group, a division of Thomson Learning


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