1. Brain Signaling for Food By George Han, Sean Feng

2. Essential part of life, nutrition, vitamins Brain signals the quantity intake of food Affected by smell, sight, and memory Brain turned on by taste and emotion INTRO

3. Hypothalamus signals nerves in the stomach Determines specific appetite Amino acids (protein), fatty acids (fat), glucose (carbohydrates) Insulin hormone sends brain message

4. Low glycogen level/Low blood sugar level Stimulate activity in hypothalamus Increasing sweet/starchy food desire Ghrelin/Leptin circulation NPY Different types of food Sweet/Starchy High calories Fat food

5. Leptin levels increase= cause of fullness Inhibit firing of NPY Galanin fat connection Stores up fat Evening Enough calories to last through night

6. Food digested feeds body cells Chlecystokinin (CCK) Causing fullness, less appetite Bulimia Over eating disorder Binge purge syndrome CCK mechanism doesn’t function Anorexics Suffering from extreme thin CCK mechanism is oversized

7. To sum up… Human body has a complex system that signals our body for hunger. Brain plays a big part of our survival instinct. Bulimia and anorexia are caused by CCK malfunction.

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