Exam 1 - The Science of Nutrition Study Questions What is...

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The Science of Nutrition Study Questions What is the purpose of science? A formal system that helps us discover knowledge Anecdotal evidence What is anectdotal evidence? Our personal expierence What are pitfalls of anecdotes? Often unreliable, evidence of one induvidual How else might you go about learning the truth in the matter? Scientific Method What is the scientific method? What are the stages involved? A systematic collection of information to determine validity, Begin with a hypothesis, conduct an experiment, and evaluate the outcome Experimental Design What is the experimental group? What is the control group? Which receives treatment? Experimental group – Receives treatment, Control group – Does not receive treatment Exclusive of treatment, how should the groups compare? What is the difference between observation and intervention? Ovservation does not make changes, Intervention makes changes Experimental Design in Nutrition Epidemiological studies What is a natural experiment? An experiment that a population conducts on itself, probably without knowing they are doing so What is an epidemiological study? Researchers study large populations in a natural environment
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What do we mean by exposure? What do we mean by outcome? Exposure: Hypothetical cause of an outcome Outcome: Ending result What is correlation? Relationship between two associated things Does correlation prove causality? No, it does not prove cause and effect Case control studies What is a case control study? The difference between groups of subjects is the experimental variable Considerations in human trials What are the ethical limitations in human trials? Cannot risk doing things to people that may be harmful or do not give them the most benefit What is randomization? Randomly assign study subjects to experimental or control groups What do we mean by double-blind? Study where neither the researcher nor the study subject knows which treatment the subject is getting Generalizability vs. control What do we mean by generalizability? By control? Generalizability: The degree to which one finding can be assumed to apply to some other group or situation Test Control Generalizability Human Low High Animal High Low Epidemiological Extremely Low Extremely High
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Sources of Nutrition Information Who are good sources of nutrition information? Scientific journal that have a panel of experts who review each study before it is published, Nutrition Action (Magazine), Look for a Registered Dietitian (RD) Traditional Diet Study Questions Exercise Let's say you live around here a thousand years ago. No supermarkets. No imported foods. No nutritional advice. What would you eat? Food high in fiber and starch Survey of Traditional Diets Gatherer-Hunters Hunters In what kinds of environments do we see people relying primarily on hunting? What are the advantages of hunting in these places? What kinds of animals do they hunt? Cite some examples we saw. Arctic environments primarily hunt seal, whale, and other
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This note was uploaded on 03/30/2008 for the course NUTRI SCI 132 taught by Professor Anderson during the Spring '08 term at Wisconsin.

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Exam 1 - The Science of Nutrition Study Questions What is...

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