Midterm Review

Midterm Review - MIDTERM: Quiz 1 Review 1/23 • Major...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: MIDTERM: Quiz 1 Review 1/23 • Major cause of death in adults <75? …lifestyle • Obesity today:>2/3 of US adults are overweight or obese Major risk factor for heart disease, diabetes, hypertension, cancer • Poor eating habits may affect your health for yrs w/o symptoms • Food is: edible biochemicals • In 2005 consumers only spent 9.9% of disposable income on food As disposable income ↑, share spent on food ↓ 1/25 • According to a survey, taste is the most important factor in food selection • Life expectancy is on the rise due to: o ↓ in infant & child mortality o ↓ in mortality in child bearing o Advances in medicine, nutrition, & sanitation • Population Dynamics o Today: ~300M people o Add 50-80M by 2020 o Largest & fastest growing segment of US population: Hispanics Now: ~40M; +1.2M/yr Grows at rate of 13% per yr o 2 nd fastest: Asian American Now: 13.5M Grows: 12.5%/yr • Meals today: fast, fresh, frequent, flexible, flavorful • ’04 food $: o Farm value: 19 cents; marketing bill: 81 cents o Labor (38.5) ; Packaging (8) ; Rent (4.5) ; Profit (4.5) • Food system: o Production o Manufacturing/processing o Marketing/Distribution o Consumption • Agriculture: largest industry in the world; US produces more food than any other nation and is the largest exporter of agricultural products o Farms are consolidating; in the future, tech will be a driving force and there will be less gov’t support o Food processing industry: merger mania → intense competition → active new product development o Food service industry: steady growth since 1980’s, 9% of the workforce, 48.5% of food $ is away from home 1/30: Key Nutrition Concepts 1) Food is a basic need of human • Hunger and malnutrition are underlying cause of death in children • 1B hungry people in the world • 840M chronically hungry • Food Security: access at all times to a sufficient supply of safe, nutritious food o Food insecure: 10% in US & 4% in Canada 2) Food provides energy, nutrients, and other substances req’d for growth & health • Essential Nutrients: o Req’d for normal growth and health o Cannot be produced by the body in sufficient amounts = must be present in the diet o Ex: Vitamin A, Linoleic Acid, Iron • Nonessential Nutrients: o Req’d for normal growth and health o Can be synthesized by body cells from other dietary components = not req’d in diet o Ex: Cholesterol, Oleic Acid • Energy Nutrients: o Carbs: Starches & Sugars → 4kcal/g o Fats → 9kcal/g o Proteins → 4kcal/g o (Alcohol → 7kcal/g) • How much do we need? o EAR: Estimated Average Requirement Amount of a given nutrient needed to meet the needs of ½ the people in a healthy population The mean requirement for a healthy population o RDA: Recommended Dietary Allowance: RDA = EAR + 2*(sd) Level of intake of a given nutrient judged adequate to meet known nutrient needs for practically all healthy people while decreasing the risk of certain diseases...
View Full Document

This test prep was uploaded on 09/18/2007 for the course FD SC 150 taught by Professor Gravani&miller during the Spring '07 term at Cornell.

Page1 / 14

Midterm Review - MIDTERM: Quiz 1 Review 1/23 • Major...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online