Unit 3 - Eating Disorders - normal eating (governed by...

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Eating Disorders - normal eating (governed by hunger and satiety, in energy balance, normal weight). - Undereating: if you were starving yourself, you would have negative energy balance, will make you underweight. Called anorexia nervosa. - Overeating (positive energy balance, could be inactive. Called also binging, when you sit down at a period of time and in that sitting you eat a shitload of food. - Binge purge alteration. Eating a lot, using excessive exercise. We eat a lot and try to compensate. This is called bullemia nervosa. Usually see fluctuation. Like bulimia nervoda fluctuations. Binge starve, binge purge - These are eating disorders at the extremes. - Disordered eating: if your eating is not normal but is not severe enough to fall into eating disorders. Etiology: the etiology is psychological disorders. - not obtained through bad eating. - Internal: genetics - External: famiy, society - Individuals vary on which cause has a bigger influence (internal vs external) - Demographics: applicable to all eating disorders, 95 percent female. Could be underreported in males. 90 percent middle upper class. Almost 100 percent in wealthy, 50 percent highly educated - 20 percent of college age women, 1m 100-150 women - Anorexia nervosa: anorexia of psychological origin. No known physical illness that can account for this. - Marked by starving/undereating. Loss of at least 25 percent body weight. - There is an intention to lose weight, refusal to lose body weight - Fear of obesity, distorted body image. - Also seen in anorexia: Amenorrhea loss of bone mineral. - Early osteoperosis can be reversed, but still is dangerous. - History: goes back to 1689 – first description. - Flapper era: 1910-1925 - Twiggy: 1960s, really thin model. - Onset: early adolescence. Generally unremitting unless there is intervention. - Sometimes people may have just a single episode, but then recovery. People who do that are at a higher risk for a relapse. - Untreated people: continues until death. (30 percent of people) - Look at treated and untreated people, mortality is 5-10 percent. - Has a familial pattern. - Features: often we see peculiar behaviors (may hord food, cook for people but not themselves) - OCD behaviors - Perfectionism - Tend to be high functioning goal oriented people. Tend to perform well in school, jobs, ect.
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- Complications: muscle wasting loss of body fat (insulator)- slower metabolism - All this results in hypothermia. - Lanuga: grow hair to keep warm. - Brittle nails, brittle hair, brittle skin due to nutrient deficiences - Weakness/fatigue from loss of mass and intake - Poor wound healing - Electrolyte imbalances. - Can lead to heart arythmia. Strength and cardiovascular system, energy systems, chemical pathways can be trained Coordination, balance, technique Strength exercise (resistance): have a high resisted load on isolated muscle groups. If you build muscle, you raise lean mass and BMR
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This note was uploaded on 12/13/2011 for the course NUTRI SCI 132 taught by Professor Anderson during the Spring '08 term at Wisconsin.

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Unit 3 - Eating Disorders - normal eating (governed by...

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