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Lecture

Food And Science (Drug CHEM183)
Food And Science (Drug CHEM183)

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School
McGill University
Department
Chemistry
Course
CHEM 183
Professor
Ariel Fenster
Semester
Fall

Description
WOC – Drugs th November 13 , 2012 5:30-7:30pm Food: A Serving of Science lecture Jane Brody “High priestess of nutrition”; NY Times columnist  (no PowerPoint)  Good diet = not rocket science, fundamentals of a good diet have not really changed  Michael Paulin’s mantra: eat food, not too much, and mostly plants  Reason to listen to people like Brody and Paulin’s info re: nutrition = due to no vested interest in alternative motives (i.e. no research funding etc…meaning that their information is sometimes more valuable than more “esteemed” knowledge because esteemed knowledge is sometimes back by different motives such as a company that wants to see the research it funded prove that their vitamin supplements ARE a good idea vs. people like Brody who are really just interested in good healthy nutrition)  Broccoli has a natural toxin vs. (i.e. that attacks) the thyroid gland; reason to be cautious in using terms like “natural” meaning “safe”  Natural is a concept much like the other food-fads (ex: antioxidant, gluten free, high carb, low carb…)  People jump on nutritional band wagon of things they think the consumer will buy… ex: gluten free, suddenly everyone is gluten-sensitive (celiac disease)  Food should not be thought of as a delivery system for certain nutrients  Our bodies do not know how to process individual/isolated nutrients ex: fructose vs. sucrose broken down naturally by the body  Rules of nutrition: 1. Eat the kinds of foods that the human species evolved on due to essentially same biological beings as beginning 2. Eat an amount of protein that reflects our nutritional needs (ex: not a whole steak, animal protein foods should be thought of primarily as condiments not main meals…humans made to be OMNIVORES not carnivores or herbivores; difference between humans and dogs = humans have longer digestive tracts more appropriate for omnivore metabolism, vs. dogs with shorter tracts meant for carnivore digestion); (2-3 ounces/ meal = more than enough protein for humans) 3. 2/3 or more of plate should be filled with vegetables 4. Eat LESS, should not be leaving table stuffed, eat until SATISFIED not full = most successful of weight loss regimen (as lose weight, amount of food required to be satisfied will decrease too)  Low fat craze (i.e. people eating foods just because they’re “low in fat!”) prompted people to snack between leading to increased calories anyways  Avocados and nuts are regular parts of healthy balanced diets  Peanut butter diet (scientifically substantiated) = unsaturated fat, sticks to stomach doesn’t get digested so fast, keeps satiated longer, full of essential nutrients too  Sensible approach is to use less sweetening and eat less sweets, use of fruits should replace sweets  Emphasis on making own food instead of buying manufactured food  Goal should be to focus on real foods the way they come from the land, the closer to earth you eat the better, this does not mean don’t eat processed food ever, just means mostly foods that come from the earth  Don’t get sucked in by health claims, health symbol certifications, low fat, low salt etc., etc.  Learn to read nutrition labels properly  Most supermarkets are nutritional traps with very little food that resembles what our grandparents ate, most things come in packages; best advice, shop periphery of market first fill cart like that, use center to balance diet with grains for example  People who shun GMOs (genetically modified food) have a poor understanding of genetics, when a gene function is known it can be added to anything to produce the SAME substance; GMOs reduce dependence on fertilizers, water… increase yield, availability  The whole of a food is not simply the sum of its individual parts  N. America = Food-on-the-run era; notice how Japanese do not eat in their cars therefore no cup holders in cars; French maintain lean figures despite fatty foods and carbs due to sit and eat slowly and don’t tend to eat in between  Fruit and nuts = expected snacks  Reason for farmers so thin despite all cheeses and fatty dairy products = did physical labour all day  For balanced exercise regimen: consider aerobic activities, strength building activities (lifting weights, digging in garden); fl
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