DRIs Flashcards
What are DRIs:
Common set of ______ ______ for Canada and the US that are based on scientifically grounded relationships between nutrient intakes and indicators of adequacy
reference values
DRIs are designed to:
Provide _______ _________ and planning guidance for individuals & groups (populations)
Reflect scientific evidence concerning the relationship between _____ and _______ _________reduction
dietary assessment
diet, and chronic disease
DRIs are set for nutrients that:
- are found in?
- Have what?
- or which the levels required for tissue homeostasis and normal function in humans are ________
- food
- have essential, identifiable biological function
- known
How are DRIs determined?
_______ samples of certain things, when plotted on a graph, will form a _______ distribution or (bell curve)
Random, normal
What does DRI stand for?
Dietary Reference Intake
DRIs are divided into how many life stage [age] groups by sex?
12
DRI is a collective term encompassing how many possible values for individual nutrients based on age and gender:
4
What are the 4 possible values for individual nutrients based on age and gender:
- Estimated average requirements (EAR)
- Recommended dietary allowance (RDA)
- Adequate intake (AI)
- Tolerable upper intake level (UL)
Definition: 1. EAR (Estimated Average requirements)
How is it used?
the daily intake estimated to meet the requirement of 50% of the people in a specific age and sex group
evaluate individual nutrient needs and plan nutrition programs for meet groups’ needs
Definition: 2. Recommended dietary allowance (RDA)
How is it used?
the dietary intake level that meets the daily nutrient requirements of 97.5% of the people in a specific age and sex group.
can be used with EAR to assess nutrient adequacy
Definition of 3. Adequate Intake (AI)
How is it used?
a recommended intake based on observed or experimentally determined estimates of nutrient intake by a population (or groups) of healthy people;
The value is based on scientific judgement (comparable to RDA but based on less scientific evidence)
Definition of 4. Tolerable Upper Intake Level (UL)
How is it used?
the level of daily nutrient intake that is not likely to create adverse health effects in 97.5% of the people in a specific age and sex group;
UL is a ceiling or maximum level used to guard against overconsumption
Intakes below what are likely to need improvement?
EAR
Intakes between what are likely to need improvement?
EAR and RDA. Intakes below RDA cannot be interpreted accurately.
Intakes above what are adequate?
RDA
What is the goal of DRIs
to recommend a diet that provides adequate but not excessive, levels of nutrients
Max, aged 20 years, has an average intake of Vitamin C of 100 mg/day. The EAR for Vitamin C for males aged 19-30 years is 75 mg/day. The RDA for males aged 19- 30 years is 90 mg/day. The UL is 2000 mg/day.
- How would you assess the adequacy of Max’s average Vit C intake?
Probably adequate
Sarah, aged 60 years, has an average intake of Vitamin E of 10 mg/day. The EAR for Vitamin E for females aged 51-70 years is 12mg/day. The RDA for females aged 51- 70 years is 15 mg/day.
- How would you assess the adequacy of Sarah’s average Vit E intake?
Inadequate
The further the intake is below the RDA the more likely it is to be
inadequate
If intake is >= AI, it is very likely
if intake is <AI
adequate
cannot conclude anything about inadequacy
Intake >UL
Intake <UL
may present a health risk for some people
likely safe
Requirements for MOST nutrients are ______ _______
normally distributed
DRIs are primarily focused
focused on micronutrients
What is primarily focused on Macronutrients?
AMDRs, Acceptable macronutrient distribution ranges (AMDRs)
