NUTR 2105 Lecture Notes - Lecture 9: Gastric Bypass Surgery, Liposuction, Fad Diet
10 Apr 2017
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Document Summary
High prevalence in minority groups and lower ses. Global food system of energy-dense, processed foods fat cell development. Adipose tissue stores excess energy as fat. Fat cell numbers increase during childhood and adolescence. When energy out exceeds energy in, fat cell size increases. there is no change in the number fat cell metabolism. Storage of triglycerides in fat cells (taken from blood) More enzymes found in areas fat is stored. thighs for females, belly for men. Genes interact with diet and physical activity and metabolic pathways obesity gene. Named ob codes for the protein leptin surpasses appetite. Leptin injections effective in reducing body weight in animals. Leptin goes up with weight gain, but can lead to resistance ghrelin. White adipose tissue stores fat for use by other cells oxidation releases energy as atp and heat. Brown adipose tissue releases stored energy as heat oxidation uncoupled from atp formation. Obese people have more white adipose tissue.
