Feb3Lec10 - Annotated transcription of 2/3/10 lecture...

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Annotated transcription of 2/3/10 lecture notes. 1 Nutrition and the Discovery of Essential Nutrients Study Hint: Use these notes and class power points to help you answer the questions posted on Blackboard that relate to today’s lecture. (Clicker Question) Answer is D Last lecture covered : Cells as the basic units of life, cellular organelles, endosymbiotic theory. Today’s lecture will cover : First of a series lectures examining nutrition [recall cells need energy to maintain their life functions] Freedom from want and nutritional research Food & nutritional needs The relationship between diet and disease Discovery of vitamins C, A, B 1 3 How science works (in reality not a linear model) Science takes Two steps forward & 1 steps back More than one pathway can be taken Critical thinking is needed, success in science means to avoid following “trends” (ppt) What is meant by the Freedom from Want? See the first 3 content slides for summary. (ppt SERIES) What does food do for us? Food replenishes the atoms in our body Provides energy Fuels ability to: perform actions think thoughts prevent disease * What is the difference between a reductionist and holistic view of the food we select?
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2 (ppt) What are the advantages/disadvantages of the following 4 different types of nutritional studies? 1. Case-Controlled Studies 2. Metabolic Studies 3. Cohort Studies 4. Randomized Controlled Trials Is one of the above methods better than the other? [Why OR why not] When would you choose to use each of these studies? In reality, you are left taking the limited data you have [acknowledging the limitations of that data] and make your best guess [example of critical thinking]. (ppt) What are the main elements (composing over 96% of the total present) found in the human body? Keep the following in mind while progressing through the lectures on nutrition…… Answer, the life elements including: Oxygen (O) Carbon (C) Hydrogen (H) Nitrogen (N) Plus, trace elements (ppt) The life elements highlighted above are organized into the major organic compounds [proteins, lipids, carbohydrates, Nucleic Acids] making up the human body. (ppt) We should, therefore, eat foods that reflect the major chemical composition of our body. (ppt) It follows that, based on our chemical composition, we should eat foods reflecting our composition. However, we use up some nutrients faster than others chemicals that turn over faster have to be supplied at a greater rate than the nutrients that turn over slowly consequently, we have to be thoughtful about our diet (ppt) ALL heterotrophs have to kill to eat!!! Schweitzer argues we should, therefore, do this killing with a
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Feb3Lec10 - Annotated transcription of 2/3/10 lecture...

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