PSYC 001 Study Guide - Midterm Guide: Nucleus Accumbens, Frontal Lobe, Leptin
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This includes the liver, the hypothalamus, and fat cells releasing leptin). You don"t have to remember these facts: there is a genetic component to obesity, but there must also be non-genetic mechanisms because of the rapid increase in obesity rates over the past decade or two. This rapid increase is too fast to be an evolutionary mechanism: first, our evolutionarily-designed stress responses make sense for threats like predators, but less for threats like deadlines. Being stressed all the time is bad for you, partly because we"re equipped for the wrong sorts of threats. Another interesting point: in animals, aggression from hunting isn"t like aggression in fighting. No signs of anger are shown while hunting. Physiological needs like hunger is at the bottom (more important), then safety. Increases physiological cost: have to exert yourself more to cover up emotion (greater sympathetic nervous activity)
