Lecture 1 Flashcards
(19 cards)
Essential Nutrient
Cannot be synthesized in the body, myst be consumed in diet
Nutrient
Needed for energy or for synthesis and/or function of biomolecules
Non-Essential
Can be synthesized in body
Macronutrient
Make up bulk of diet, needed in quantities of greater than 1 gram per day
Micronutrients
Needed in quantities less than a few milligrams per day
1 calorie(cal)
heat energy required to raise temp. of 1 gram of water by 1 degree celsius
Nutrient content claims
- Describes amount nutrient or calories per serving
- Pre-established by FDA based on fixed standards
- Foods and dietary supplements
Health Claims
- Claim about how product may affect risk for disease or health related condition
- Two types; regular health claims and qualified health claim
Regular health claims
- Supported by considerable scientific evidence
- pre-approved by FDA or NAS
Qualified Health Claim
- Much lower standard of evidence
- requires petition to FDA
- must be accompanied by qualified statement
- allowed for both regular foods and dietary supplements
Structure Function Claim
- Statement of the role that the nutrient is known to play in normal metabolism and physiology
- cannot link nutrient to overall health or decreased susceptibility to disease
- not pre-approved by FDA but must be truthful
Types of scientific evidence
1) statistical correlations provided by epidemiological studies
2) evidence showing causal relationship
Sources of scientific evidence
1) Primary research articles
2) Meta-analysis research article
3) Review article
DRI
-Dietary reference intake standards
EAR
- Estimated average requirement
- used to examine likelihood that intake is adequate in a population
AI
- Adequate intake level
- used to examine likelihood that intake is adequate when no RDA is set for a nutrient
UL
- Tolerable upper intake level
- used to examine likelihood of excess or toxicity
RDA
- Recommended dietary allowance
- used as a goal to help ensure adequate intake in an individual
EER
- Estimated energy requirement
- kcal that should be consumed per day