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Across 3. This is a neurone important for regulating appetite, investigated by Friedman 9. The satiety centre in the hypothalamus 12. This explanation considers how people think about food 14. The hunger centre in the hypothalamus 17. A gene implicated in obesity 18. Thsi theory proposes obesity is casued by observation and imitation of role models 19. They examined obesity caused by sleep eating 20. This relates to the use of food as a reward 21. Using success of treatment to support an explanation may be considered as this

Down 1. A hormone related to emptiness of the stomach 2. They looked at both adoption and twin studies 4. One of the most effective treatments for obesity (o'Rourke) 5. They found obesity to be related to social networks 6. A hormone related to number of fat cells 7. Psychodynamic theory may see food as a substitue for this 8. This proposes that eating occurs automatically depending on cues available 10. These people have one of the highest obesity rates in the world 11. This is how quickly you burn calories 13. An evolutionary hypothesis which states famine led to obese genes being selected 15. Psychodynamic theory may see this as a cause of obesity 16. He proposed the drifty gene hypothesis