ESS 323 Lecture Notes - Lecture 1: Trans Fat, Dietary Reference Intake, Food Fortification
EXAM 1 Study Guide Outline
Chapter 1 and 3 + PP slides
1. Introduction
a.! !RDA, DRI, EAR, AI, UL
●RDA→ recommended dietary allowances
○Average daily level of intake sufficient to meet the nutrient requirements of
nearly all (97-98%) healthy people
○Developed in 1941
○US National Academy of Sciences
●DRI→ Dietary reference intakes
○1997
○Expands the RDA
○Includes EAR, Al and UL
○Applications include:
■Composition of diets for schools, prisons, hospitals or nursing homes
■Industries developing new food stuffs
■Healthcare policy makers and public health officials
●EAR→ estimated average requirement
○Intake level for a nutrient at which the needs of 50% of the population will meet
●AI→ adequate intake
○Target intake level of a nutrient based on peoples estimated dietary intake
●UL→ tolerable upper intake level (UL)
○Higher nutrient intake than this would be harmful
b.! !Enriched vs fortified
●enriched→ replaces nutrients that were lost in processing of the food
●fortification→ adds nutrients not originally present in the food
c.! !Dietary Guidelines for Americans
●Consume adequate nutrients with caloric needs
●Balance calories ingested with calories expended to reduce weight gain
●Engage in regular physical activity, including cardiovascular conditioning, stretching
and resistance training
●Consume a variety of fruits and vegetables while staying within energy needs
●Limit intake of fats, particularly those high in saturated fats and trans fatty acids
●Consume rich sources of carbs, such as fruits, vegetables and whole grains
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Document Summary
Chapter 1 and 3 + pp slides a. rda, dri, ear, ai, ul. Average daily level of intake sufficient to meet the nutrient requirements of nearly all (97-98%) healthy people. Composition of diets for schools, prisons, hospitals or nursing homes. Healthcare policy makers and public health officials. Intake level for a nutrient at which the needs of 50% of the population will meet. Target intake level of a nutrient based on peoples estimated dietary intake. Higher nutrient intake than this would be harmful b. enriched vs fortified. Enriched replaces nutrients that were lost in processing of the food. Fortification adds nutrients not originally present in the food c. dietary guidelines for americans. Balance calories ingested with calories expended to reduce weight gain. Engage in regular physical activity, including cardiovascular conditioning, stretching and resistance training. Consume a variety of fruits and vegetables while staying within energy needs. Limit intake of fats, particularly those high in saturated fats and trans fatty acids.
