Reflect on what role homeostasis and drive theory play in understanding physiological motivation. Articulate current knowledge pertaining to hunger as a complex motivation. Feel free to really elaborate on the feeding cycle, when eating is initiated (the role of glucose and fatty acids), when feeding stops, and so forth. What factors make obesity difficult to treat and why is increased serotonin more promising for low-medium risk obesity (bariatric surgery is still the most beneficial for extreme obesity). Lastly, what biological processes are implicated in the development of eating disorders (serotonin, dopamine, and cannabinoid systems), what do family/heritability studies show about the development of eating disorders? Be sure to also elaborate on the unique environmental influences that suggest epigenetic effects in eating disorders as well.