NSC 170C1 1st Edition Lecture 3 Outline of Last Lecture I. Health is more than the absence of diseaseOutline of Current Lecture II. Scientific MethodA. Steps B. Researchi. PartsIII. NutritionistCurrent LectureI. Scientific Method: the process by scientist use to design experimentsA. Observe/ ask a questionB. Form a hypothesisC. ExperimentD. Conclusion E. The scientific method involves sharing findings with the scientific community, sharing their findings to a journey F. Researchi. Lavatory Research- conducted in a laboratory; may involve animals such as ratsii. Observational research- involves looking at factors in two or more groups of subjects to see if there is a relationship to certain health outcomesiii. Epidemiological Research- a type of observational research that looks at populations of peopleI.e. the relationship between sun exposure and incidence of rickets in Norway compared with Australiaiv. Experimental research- involves at least two groupsof subjectsa. Experimental group- given a specific treatmentb. Control group- not given the treatment; often receive a placebo, or sugar pill,insteadDouble-blind, placebo-controlled study—the “gold standard” of experimental researchc. Neither scientists nor subjects know which group is receiving which treatment. All variables are the same and controlled in both groups. This method helps eliminate bias.II. Nutritionist A. Registered dietitian (RD)i. Completed at least a bachelor’s degree at an accredited U.S. college or universityii. Completed an ADA-approved supervised practice and passed an exam administered by the ADAiii. Qualified to provide medical nutrition therapyPublic health nutritionist—may have a degree in nutrition but may not be an RDB. Quack watchersi. Quackery: the promotion and selling of health products and services of questionable validityii. Americans spend billions annually on fraudulent health products.iii. Sellers may use testimonials and false claims that aren’t backed by sound science and research.iv. Sellers may make unrealistic promises and
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