Lecture 1 Flashcards
What are the 4 DRIs?
Estimated Average Requirement (EAR)
Recommended Dietary Allowance (RDA)
Adequate Intake (AI)
level Tolerable Upper Intake Level (UL)
EAR is:
used to examine likelihood that intake is adequate in a population
RDA is:
used as a goal to help ensure adequate intake in an individual
AI is:
used to examine likelihood that intake is adequate when no RDA is set for a nutrient
UL is:
used to examine likelihood of excess or toxicity
how many life-stage groups are there for women? for men?
16, 10
The EAR in more detail:
the average daily nutrient intake level that meets the needs of 50% of the healthy individuals who are in a particular life stage and gender group.
RDA = EAR x ?
1.2
an example of a nutrient with an AI:
potassium
If your intake of a nutrient is much less than the EAR, then it is likely to be:
inadequate
If your intake is between the EAR and the RDA, then you should probably:
increase your intake
If your intake is between the RDA and the UL, then it is probably:
adequate
EER:
average energy intake that is predicted to maintain a healthy weight.
is EER generous?
no
AMDR values :
Carbs: 45-65% of total energy intake • Fat: 20-35% of total energy intake • Protein: 10-35% of total energy intake
DV are necessary because:
DRIs are too specific
Printing of DVs is mandatory since:
2006 in canada
4 general groups of food:
Grains
Milk and alternatives
Meat and alternatives
Fruits and vegetables
Without the bran and germ:
about 25% of a grain’s protein is lost, along with its nutrients.
The bran:
the multi-layered outer skin of the edible seed. It is fibre-rich.
The germ:
the embryo. It has the potential to sprout into a new plant. This potential vanishes when you eat it! The germ ontains vitamins.
The endosperm
the embryo’s (the germ’s) food supply, which provides essential energy to the germ so it can sprout – set out some roots and begin photosynthesis. The endosperm is by far the largest portion of the seed. It contains mostly starch.
Health Canada defines whole grains as:
the dried seeds of cereal species:
Whole grains must contain:
all of the original germ, bran and endosperm.
Enrichment:
addition of vitamins and minerals to food products to replace those lost during processing or refinement
Fortification:
addition of supplementary nutrients to food
Why are beans, peas, lentils and peanuts all grouped together?
They all have seeds that are enclosed inside a pod.
