PSYC 102 Lecture Notes - Lecture 51: Interpersonal Attraction, Anorexia Nervosa, Menstrual Cycle
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PSYC 102 Full Course Notes
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Leptin: hormone that signals the hypothalamus and brains tem to reduce appetite and increase the amount of energy used. People who lacked leptin were more obese, bc they are resistant to the effects of leptin. Release (cid:374)eurotra(cid:374)s(cid:373)itters like seroto(cid:374)i(cid:374) that a(cid:272)ti(cid:448)ate the (cid:271)rai(cid:374)"s pleasure (cid:272)ir(cid:272)uits. In this way, our bodies defend against weight loss: obese people keep their weight below their set point. Can also be biologically predisposition: can be born with more fat cells, lower metabolic rates at which their bodies burn calories, with less sensitivity to leptin than thin people. Most of us can control and modify our weight, within limits, by staying active and eating a healthy diet. Melanocortin-4 receptor gene = a mutation in this causes sever obesity: ne(cid:448)er feel full, regardless of (cid:449)hether they"(cid:448)e eate(cid:374) a stra(cid:449)(cid:271)erry or half a strawberry pie, their (cid:271)rai(cid:374)s do(cid:374)"t let the k(cid:374)o(cid:449) (cid:449)he(cid:374) to stop eati(cid:374)g.
