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Lecture 3

URBS 359 Lecture 3: Lecture 3 Notes

4 Pages

Urban Studies
Course Code
URBS 359

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1.19.17 Lecture 3: An Overview of Nutrition DGA • Most recent version of DGA: Social Ecological model for food and physical activity o Analyses what goes into dietary intake: social and cultural norms and values + sectors + settings + individual factors = health outcomes o All these factors^ societal, etc. need to be addressed for diet to change • The role government has in helping shape people’s diets o i.e. Bloomberg’s Soda Ban- Mayor of New York tried to put a ban on the size of soda ▪ People are free to drink as much soda as they want, but it’s just going to be more expensive Main points from Ch. 1 • What are the 6 major classes of nutrients? o Carbohydrates: organic, energy-yielding (4 kcal/g), macronutrient o Lipids (fats): organic, energy-yielding (9 kcal/g- most calorically dense), macronutrient o Proteins: organic, energy-yielding (4 kcal/g), macronutrient o Vitamins: organic, micronutrient ▪ 13 organic vitamins • Fat soluble (A, D, K) and water soluble o If a vitamin has a UL, and you consume more than this, there is potential for adverse effects. This is true for both water soluble and fat soluble vitamins. • Each has a special role to play ▪ Facilitate energy release • Don’t provide energy • Almost every bodily action requires assistance from vitamins ▪ Vulnerable to destruction • Heat (as from cooking), light (A), and chemical reaction o Minerals: inorganic, micronutrient ▪ Do not yield energy ▪ 16 essential minerals (you need to acquire it through the diet/food sources) ▪ Other minerals are environmental contaminants (i.e. lead, vitamin D) o Water: inorganic ▪ Environment for nearly all body processes ▪ There is a requirement of how much water you have to consume (food from food and just straight up water) o Only macronutrients provide calories or yield energy o Micronutrients do not yield energy o Macro v. micro: your body requires more macronutrients than micronutrients • Discuss dietary reference intakes (DRIs):
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