PSYC 2500 Lecture Notes - Lecture 6: Junk Food, Respect Diversity, Victim Blaming
10 Oct 2016
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Obesity: a chronic and often progressive condition, similar to diabetes or high bp, characterized by excess body fat that can threaten or affect your health. Canada (2/3 are in ontario and alberta, leaving many provinces without) 24% of adults are obese in canada. Genetic/biological: hereditary (30-70%, hormones in fat regulation. Ghrelin is a hormone that is secreted in the stomach and the brain, and is a trigger for the feeling of hunger. Levels increase before meals, and go down after meals. After weight loss, levels do not go down as much after a meal and are quicker to rise, leaving people feeling hungrier. People with obesity have quicker ghrelin secretion which leads to more frequent eating. Leptin a hormone produced in fat cells and also in the placenta; it controls weight by signaling the brain to eat less when body fat stores are too high.
