UW-Madison NUTRSCI 132 - Evolution of the Human Diet (2 pages)

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Evolution of the Human Diet



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Evolution of the Human Diet

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Lecture number:
3
Pages:
2
Type:
Lecture Note
School:
University of Wisconsin, Madison
Course:
Nutrsci 132 - Nutrition Today
Edition:
1
Documents in this Packet

Unformatted text preview:

NUTR SCI 132 Lecture 3 Outline of Last Lecture I Scientific Method II Observational Studies III Interventional Outline of Current Lecture I Analysis of Methods of Research II How has the diet evolved over time a Hunter gatherers b Agriculturalists Current Lecture I Analysis of Methods of Research CONTROL Animals II GENERALIZABILITY Clinical Trials Epidemiology a Animal Studies i High Control low generalizability b Epidemiology i Most generalizable low control can only study what people are already doing c Clinical Trials i Less generalizable Lab is not the same as the real world ii Not as good of control as animals studies iii Best compromise 1 Hardest to execute d Just one type of study is insufficient i Ideally researcher should have many studies as well as many types How has the Human Diet Evolved Over Time These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute a Hunter Gatherers i Could not be picky with food ii Not many modern hunter gatherers lef 1 Inuits in Alaska a Live in Tundra not much to eat i Seafood 2 Native Americans a Fairly high food security wild rive grew corn i Buffalo iii The need to get food dictates your life 1 Follow the food iv Processing very important in order to maximize amount of nutrients you can obtain from environment v Likely more gathering of plant foods than hunting for most people groups b Agriculturalists i Corn is most productive crop calories acre 1 Niacin in corn is not readily available to digest bioavailable a Mexicans grind up corn and treat with lime calcium carbonate i This process makes niacin bioavailable ii Agriculture only began 8 000 5 000 years ago 1 Only 2 3 of our genes have changed as a result iii Potatoes from Peru 1 Wild potatoes have a toxin a Treated with clay to neutralize orb Breed modern potato so it doesn t have toxin iv Today only 1 Americans involved in Agriculture but everyone celebrates Thanksgiving a



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