2: Dietary Guidelines and Food Policy Flashcards
Nutritional status
condition of the body with respect to nutrition
- whether a person has the appropriate level of nutrients to meet their needs
What are the three steps in a Dietary Analysis?
- Recording everything a person ate over a period
- Comparing recorded intake levels to recommendations
- Determine whether person’s nutrient status is adequate, deficient or excessive
Pros and cons of Dietary Analysis
Pro: give insight whether nutrient intake meets our needs
Con: fails to account for what happens in the body when we eat food
What are laboratory tests used for?
Use blood samples to determine nutritional status
Dietary reference intakes (DRIs)
set of scientifically determined reference values for nutrient requirements
- vary depending on gender and stage of life
How does DRI differ on an individual vs population level
Individual: used to assess nutritional status and determine whether an individual is inadequate, adequate or excessive for a nutrient
Population: used to inform dietary recommendations
What are the four DRis?
- Estimated Average Requirement (EAR)
- Recommended Dietary Allowance (RDA)
- Adequate Intake (AI)
- Tolerable Upper Limit (TUL/UL)
Estimated Average Requirement (EAR)
amount of a nutrient that will meet the needs of 50% of the population
- EAR rarely used alone, mainly to set recommended dietary allowance
Recommended Dietary Allowance (RDA)
amount of a nutrient that meets the needs of 97% of the population
- RDA is set two standard deviations, 20–25%, higher than the EAR
Which DRI out of the four is preferred?
Recommended Dietary Allowance (RDA) because it determines adequacy
- If we cannot determine EAR, then an RDA cannot be set
Adequate Intake (AI)
- Sometimes, there is not enough scientific data to establish the EAR and RDA, so AI is used
- determined by observing how much of that nutrient healthy people eat
More difficult to establish deficiencies since there is less evidence
Tolerable Upper Limit (TUL/UL)
consume an amount of nutrient in excess of its UL, we are more likely to show signs of toxicity
- intake should not exceed this value
What are the two energy intake recommendations
estimated energy requirement and acceptable macronutrient distribution range
Estimated Energy Requirement (EER)
total amount of energy needed to maintain a person’s current size
- To maintain energy balance, energy intake and energy expenditure need to match
Acceptable Macronutrient Distribution Range (AMDR)
recommended percentage of energy that should come from each of the three energy-yielding nutrients: carbohydrates, lipids and protein
Estimated energy requirement (EER) depends on what factors
daily energy is required to maintain energy balance depends on sex, age, height, weight and activity levels
What are the RDA for lipids and carbohydrates?
There is no RDA for lipids and carbohydrates, so the AMDR can be used to determine whether intake meets health needs
What are the AMDR percent for daily calories of carbs?
45 - 65%
What are the AMDR percent for daily calories of carbs?
45 - 65%
What are the AMDR percent for daily calories of lipids?
20 - 35%
What are the AMDR percent for daily calories of protein?
10 - 35%
Canada food guide (2019) is made of what portions
50% vegetables and fruits
25% whole grains
25% protein rich foods
And a glass of water
What four key themes did Canada food guide (2019) have
- Variety: wide range of foods
- Accessibility: foods that are relatively inexpensive for most people
- Cultural relevance: ethnic diets
- Availability: available at times of year in different forms, either fresh, frozen, canned or dried
What are the food guide recommendations
- Eat plenty of vegetables and fruits
- Choose whole grain foods
- Eat protein-rich foods
- Be mindful of eating habits
- Cook more often
- Use food labels
- Limit foods high in sodium, sugar, fat
- Be aware of food marketing