Eating Disorders (psychology notes)

Eating Disorders Biology of Eating - normally eat when hungry and stop when full - stable weight. Level of Use: l - carbohydrates - long chain of sugar molecules 2 - fats - long term energy 3- Classes of nutrients: proteins (a) structural - provide structural to cell membrane (b) functional - enzymes - catalyzists - speed up reactions. Two types of Vitamins water soluble - comes out in urine iff too much. non water soluble - can build up and can get to toxic level. Food intake is monitored by three systems Glucostat System (classical approach) >Lateral Hypothalamus - if damaged there is no way to know if hungry. > hunger network > effects of damage 2. Aminostat System - does not feel satuated - not feel full. if fails: > Ventromedial Hypothalamus > Satiation network > effects of damage - eat and eat and eat and does not kick in. Sensitive to amino acids. If this fails 3. Lipostat System detects fat levels in blood Liver Third order fail safe based on animal research. Eating Disorders (cont)