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Health Sciences
Brent Faught

EXAM CHAPTER 5: nutrition  Poor diet/inactivity #2 risk factor of death  Atwater values o 4kcal/g for carb and protein o 9 kcal/g for lipids o 7 kcal/g for alcohol  VITAMINS: Fat – (A, D, E, K) and water – (B, C) soluble  MINERALS: Major (>100 mg/day; Calcium, Sodium, Potassium) and trace (<100mg/day; Iron, Zinc, Iodine)  Canada’s Food Guide o Introduced in 1942, latest version released in 2007  Dietary Reference Intakes (DRI) - Define the amount of energy, nutrients and other dietary components  Estimated Average Requirements (EAR) - Estimate of how much is needed in the diet (50% pop)  Recommended Dietary Allowance (RDA) – same as above but cover 98% population  Estimated Energy Requirement - average dietary energy intake that is predicted to maintain energy balance in healthy reference adults  Acceptable Macroonutrient Distribution Ranges- Carbs 45-65%, fat 20-35%, protein 10-35  Adequate intakes – insufficient scientific evidence, so best guess approach  Tolerable Upper Intake Level – max amount of nutrient that appears to be safe, toxicity RAT READING: sustainable food systems  Americans spend only 9.5% of income on food (lowest of all developed countries)  1970: 5 beef packers controlled 25% of the market  Today: 4 beef packers control 80% of the market CHAPTER 13: environmental health  October 2011: global population reached 7 billion o 1 to 2 billion took 123 years o 6 to 7 billion took 12 years o By 2050: 9.2 billion o By 2083: 10 billion  Growth is due to fertility and life expectancy o Fertility rates are falling slowly, but infant mortality rates are falling quickly o Global fertility: 4.63 now, 2.5 in 2050 o Population decreasing quickly in Europe, increasing in Asia and Africa  Most contaminants (98% bacteria, 80%+ synthetic) come from nonpoint sources  up to 90% or garbage in landfills could be diverted  extreme weather events as a result of climate change: o In the 1970s: 2 extreme events / year, In the 1990s: 12 extreme events / year o During 1984-93: 79,000 affected by extreme events o During 1994-03: 578,000 affected by extreme events CHAPTER 14: personal safety  Canada’s crime rate has been falling steadily for 2 decades, and is now at its lowest since 1973  From 2009-2010: volume of crime dropped 5%, crime severity index fell 6% to lowest point (87.2) since 1998, all crimes falling, sexual ass
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