NUTR 125 Lecture Notes - Lecture 11: Weight Loss, Dieting, Fad Diet
Document Summary
Genetics do plays a role in obesity. Evidence: identical twins raised apart have similar weights. Also, those at risk for obesity genetically face lifelong struggles with weight. Environmental factors influence weight (i. e. learned eating habits, physical activity (or lack thereof), and socio-economic status) Obesity is a chronic disease: treatment requires long-term lifestyle changes. People given or set unrealistic weight goals. Weight cycling ( yo-yo dieting ): weight loss is not maintained, after which it is gained back. Usually people gain back more than what was lost. Preventing obesity is easier than curing it. Balance between energy in and energy out. Focus on improving food habits and increasing physical activity. To lose 1 lb. per week, must have energy deficit of approx. Must create a deficit of 400-500 kcal per day, for 7 days. Gastroplasty ( stomach stapling ): non-reversible surgical procedure for severe obesity that reduces stomach size from 4 cups to a shot glass size (2 oz)
