Nutrition Today Lectures

Nutrition Today Lectures - Introduction- Jan. 23 Which are...

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Introduction- Jan. 23 23/01/2008 11:16:00 Which are useful strategies for cancer prevention? A) vitamin supplement o Anti-oxidants (A,C,E)  B) not smoking C) exercise D) diet rich in fruits and vegetables  E) spam  Which is effective in weight loss? (60% of people obese) A) low fat diet o Different types of fat o More effective in the long run  B) herbal supplements o Safety issues  C) calorie restriction (dieting) D) Exercise  o Moderate exercise program-  Raises your metabolism  Nutrients      Water Essential to life Two categories: Macronutrients (Big-) o 1. Carbohydrates
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A. Simple Carbs B. Complex Carbs o 2. Proteins o 3. Fats (lipids) Micronutrients (Small) o 1. Vitamins  o 2. Minerals  Phytonutrients  Not essential to life but good  Thousands of them Functions of Nutrients:     1. They make up our structure  o A. Water  Provides cell turgidity o B. Lipids Cellular structure o Protein Muscle  Organs o Minerals Bone and teeth  2. For energy/ fuel  3. Important for regulation of metabolism 
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o metabolism: (sum of all chemical reactions in the body) Examples of chemical reaction: 1. Synthesis  Use protein as a catalyst (makes the reaction  happen in conditions might not otherwise) =  ENZYMES 2. Energy Release  vitamins and minerals make reaction happen 3. Fluid Balance  need sodium and potassium  4. Acid Base Balance controlled by various minerals  Energy     Calories= Kilocalories (kcal) Certain foods provide energy (macronutrients) All carbs provide 4kcal per gram  Protein- 4kcal per gram Fat – 9kcal per gram  o Most energy dense o More fat= more calories Alcohol- 7kcal per gram 
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The Science of Nutrition 1- lec.2 Jan. 2523/01/2008 11:16:00 Synopsis : New discoveries in the field of nutrition are derived in large part from  applying the Scientific Method to an area of inquiry. This lecture defines and describes  the Scientific Method as well as another source of information - Anecdotal Evidence. A  range of experiment designs   are then examined for their strengths and weaknesses.  The concepts of Generalizability and Control   are defined and applied to how we come  to evaluate outcomes. Reading: Chapter 1 I. Process of scientific discovery Anecdotal evidence (testimonial) o Anecdote: is a story, reporting of one persons experience Not always good: oSide effects, pregnancy, allergy, cost,  placebo effect, coincidence (other cause), genetic differences,  lifestyle, toxicity, vitamin deficiency  Scientific method (systematic exploration)
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This note was uploaded on 04/14/2008 for the course AFRICAN 210 taught by Professor Haroldscheub during the Spring '08 term at University of Wisconsin.

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Nutrition Today Lectures - Introduction- Jan. 23 Which are...

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