Human Nutrition Lecture 2

Human Nutrition Lecture 2 - Human Nutrition Lecture 2...

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Human Nutrition Lecture 2 COHORT STUDIES Fish Intake Study 45,000 male health professionals, 6-years follow-ups and the data suggests that increasing fish intake from one to two servings per week to five to six servings per week does not substantially reduce the risk of coronary heart disease The one’s that eat the most n-3 fatty acids that eat multivitamin and smoke the least so their other healthy lifestyle habits contribute and not just solely the n-3 intake …one that eat the most n-3 get the most fiber and carotene Their history of hypertension, cholesterol, and diabetes had the highest rates in those that consumed the most n-3 fatty acids (due to people that are probably aware of their risks of heart disease due to extraneous risk factors) Limitations of cohort studies Many alternate hypotheses can explain the same observation and expensive and long durations Major Advantage of cohort studies Establishes prospective nature of relationships (e.g. temporal sequence) between diet and health…most frequently seen in media Animal and Cell Studies -carcinogen injected into mice and tumors increase and then they feed rats soy and observe no change in number of tumors -mice that took soy before being injected had less tumors and the consistent feeding of soy even after injection decreased soy even more Vitamin E Intervention You have fatty acids and lipoprotein particles and wanted to see if they would oxidize…isolate
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This note was uploaded on 05/08/2008 for the course HUMBIO 130 taught by Professor Gardner,c during the Spring '08 term at Stanford.

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Human Nutrition Lecture 2 - Human Nutrition Lecture 2...

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