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Chapter 1 - Three Societies on the Verge of Contact

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1 Chapter 1 - Three Societies on the Verge of Contact
Copyright ©2016 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

2 Learning Outcomes Describe the continuum of nutritional status.
Differentiate the methods by which nutritional status is assessed. Explain how the Dietary Reference Intakes are used to assess dietary adequacy. Utilize contemporary food guidance systems. Use food labels to plan a healthy diet. Develop an action plan that demonstrates the four steps of dietary assessment.

3 What Is Nutritional Status?
Undernutrition Inadequate intake of nutrients or energy Nutritional deficiency Overnutrition Nutritional toxicity Nutritional status Malnutrition

4 What Is Nutritional Status?
Undernutrition Inadequate intake of nutrients or energy Nutritional deficiency Overnutrition Nutritional toxicity Nutritional status Malnutrition Both undernutrition (left) and overnutrition (right) are forms of malnutrition.

5 FIGURE 2.1 Dietary Intake Influences Nutritional Status and Health
Both under- and overnutrition can result in malnutrition and poor health over time. © 2014 Cengage Learning® 5

6 How Is Nutritional Status Assessed?
ABCDs of nutritional assessment Anthropometric measurement Physical dimensions and composition Easy and inexpensive Height and weight Circumferences Body composition Amount and distribution

7 How Is Nutritional Status Assessed?
ABCDs of nutritional assessment Biochemical measurement Lab analysis of a biological sample Clinical assessment Medical history Signs Symptoms

8 How Is Nutritional Status Assessed?
ABCDs of nutritional assessment Dietary assessment Diet recall Food frequency questionnaire Diet record or food record Food composition tables and dietary analysis software

9 How Much of a Nutrient Is Adequate?
Dietary Reference Intakes (DRIs) Set of four dietary assessment standards Life stages 16 for females and 10 for males Nutrient requirement Amount that must be consumed for optimal health Factors that influence nutrient requirements

10 FIGURE 2.2 Dietary Reference Intake Standards
There are four sets of DRI reference values: Estimated Average Requirement, Recommended Dietary Allowance, Adequate Intake Level, and Tolerable Upper Intake Level. 10

11 How Much of a Nutrient Is Adequate?
Estimated Average Requirements (EARs) Meets physiological requirements of half of healthy people Not available for all nutrients Cannot be used for individuals Recommended Dietary Allowances (RDAs) Derived from EARs Used for individuals

12 FIGURE 2.3 Comparing EARs to RDAs
EAR values represent average requirements for a given population, whereas RDAs are intake goals for individuals. 12

13 How Much of a Nutrient Is Adequate?
Adequate Intake (AI) levels Not enough evidence to establish EAR Only AIs for life stage birth to 6 months Tolerable Upper Intake Levels (ULs) Highest level of usual daily intake likely to be safe

14 FIGURE 2.4 Using DRI Values to Assess Nutritional Status
EAR values represent average requirements for a given population, whereas RDAs are intake goals for individuals. 14

15 How Much of a Nutrient Is Adequate?
Estimated Energy Requirement (EER) Average intake to maintain a healthy weight Influential factors Physical activity Mathematical equations

16 How Much of a Nutrient Is Adequate?
Acceptable Macronutrient Distribution Ranges (AMDRs) Carbohydrates 45 to 65 percent of total energy Proteins 10 to 35 percent of total energy Fats 20 to 35 percent of total energy

17 How Can You Assess and Plan Your Diet?
USDA Food Pattern publications Categorizes nutritionally similar foods Recommendations for number of servings Currently five food groups Dietary Guidelines for Americans Incorporate USDA Food Patterns

18 How Can You Assess and Plan Your Diet?
2015 Dietary Guidelines for Americans Important facts Focus on eating patterns or food patterns Specific nutrients that are under-consumed or consumed in excess Overarching goals All segments of society play a role in supporting healthy choices Nutritional needs should be met with foods and beverages, not supplements

19 How Can You Assess and Plan Your Diet?
2015 Dietary Guidelines for Americans Five guidelines Follow a healthy eating pattern across the lifespan Strategies Physical Activity Guidelines for Americans Focus on Variety, Nutrient Density, and Amount Moderation Variety Nutrient density

20 How Can You Assess and Plan Your Diet?
2015 Dietary Guidelines for Americans Five guidelines Limit calories from added sugars, saturated fats, and alcohol; reduce sodium Excess consumption associated with cardiovascular disease Shift to healthier food and beverage choices Key recommendations Support healthy eating patterns for all Strategies

21 How Can You Assess and Plan Your Diet?
USDA Food Patterns 12 eating patterns Examples Kinds of foods and proportions Based on caloric needs Five food groups

22 How Can You Assess and Plan Your Diet?
MyPlate Visual food guide Five food groups Individualized recommendations 12 dietary patterns Self-assessment of dietary intake MyPlate illustrates the Dietary Guidelines for Americans recommended food consumption pattern as a consumer-friendly graphic.

23 FIGURE 2.9 An Example of a Daily Food Plan
There are 12 different daily food plans in the MyPlate food guidance system. Each food plan is based on a particular energy requirement. The food plan shown here is for a 2,000 kcal/day diet. Source: U. S. Department of Agriculture— 23

24 How Can You Use Food Labels to Plan a Healthy Diet?
Required information on a food label Nutrition Facts panel Nutrient content of the food Critical elements mandated by FDA Daily Values Two types Nutrient’s recommended daily intake Nutrient’s upper limit “Good source of”

25 FIGURE 2.10 Understanding Food Labels and Nutrition Facts Panels
The FDA mandates that food labels provide specific information. A Nutrition Facts panel, required on most food labels, helps consumers choose their foods wisely. 25

26 How Can You Use Food Labels to Plan a Healthy Diet?
Nutrient content claims How much of a nutrient is in a food Health claims Potential health benefits of foods or food components Must be approved by FDA Two kinds of health claims Regular health claim Qualified health claim

27 Table 2.6 Selected FDA-Approved Nutrient Content Claims
Source: Adapted from U.S. Food and Drug Administration. Food Labeling Guide. Available from: LabelingNutrition/ucm htm.

28 Can You Put These Concepts into Action?
Step 1: Set the stage and set your goals Step 2: Assess your nutritional status Step 3: Set the table to meet your goals Step 4: Compare your plan and your assessment Although there is probably an association between when your alarm sounds and the time the sun rises, changing your wake-up alarm will not alter the sunrise. In other words, correlation does not infer causality.

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