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Phy Sci 5 - Midterm - Topic 7
Vitamins & Minerals, Food labels & Advertising Claims
20
Physiology
Undergraduate 1
04/28/2009

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Term
Micronutrients
Definition
don't supply energy; important cofactors in metabolic reactions i.e. the vitamins and minerals in our diet.
Term
Water Soluble (vitamins)
Definition
enzymes of metabolism use these vitamins as coenzymes to help form active enzymes i.e. include the "8 B's," folic acid, biotin, pantothenic acid, and C (ascorbic acid).
Term
Fat Soluble (vitamins)
Definition
A, D, E, K - all other vitamins are water soluble.
Term
Major vs. Trace Minerals
Definition
major mins require more than 100 mg/day (i.e. calcium, sodium, potassium, chloride, phosphorus, sulfur, magnesium) while trace require less than 100 mg/day (i.e. iron, zinc, iodine, chromium, selenium, fluoride, copper, manganese, molybdenum).
Term
Calcium (relating to estrogen)
Definition
since estrogen aids in bone calcium absorption and since bone density relates to menstrual regularity, the cessation of menstruation removes estrogen's protective effect on bone making young women more vulnerable to calcium loss and decreased bone mass.
Term
Phytochemicals
Definition
vitamin-like compounds shown to impart health benefits; found in fruits and vegetables and correspond to color.
Term
Bioavailability
Definition
amount of a nutrient absorbed (that is usable by the body) compared to the amount ingested; absorption is effected by the other nutrients present.
Term
Dietary Reference Intakes (DRI)
Definition
expanded system for determining the recommended dietary allowances (RDA) and other nutrient-based reference values. Reference values can be used in planning and assessing diets.
Term
Estimated Average Requirements (EAR)
Definition
nutrient intake estimated to meet the requirement of half the healthy individuals in a particular life-stage and gender group.
Term
Recommended Dietary Allowances (RDA)
Definition
average daily dietary intake level sufficient to meet the nutrient requirement of nearly all healthy individuals in a particular life-stage and gender group.
Term
Adequate Intake (AI)
Definition
recommended intake level based on observed or experimentally determined approximations or estimates of nutrient intake by a group of healthy people assumed to be adequate; used when RDA cannot be found.
Term
Dietary Component DRIs
Definition
energy, simple sugars, lipids = NO RDA, carbs = 130 g/day, protein = 0.8 g/kg of body weight. There are different nutrient RDAs for different age groups and genders.
Term
Daily Value (DV)
Definition
amount recommended for daily consumption, used on food labels to represent the % recommendation for the various nutrients.
Term
Toxicity (of RDA)
Definition
more than ~1000% of RDA; may develop rash or other problems.
Term
Deficiency (of RDA)
Definition
less than 70% of RDA; dry skin, anemia.
Term
Parity Claim
Definition
occurs when 2 products are equal but marketers try to make one sound better than the other.
Term
Fat-Free
Definition
foods containing less than 0.5 g fat/serving.
Term
Low-Fat
Definition
contains less than 3 g fat/serving; deceiving due to small serving sizes.
Term
Lite/New/Improved
Definition
contains at least 1/3 less kcal or 50% less fat that the reference product.
Term
Calorie-Free/Low-Cal
Definition
contains less than 5 kcal/serving or less than 40 kcal/serving.
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