Lecture Notes

Lecture Notes - 4/3/08 What to Eat: Lecture 2 Hunger...

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4/3/08 What to Eat: Lecture 2 Hunger – Physical drive to eat Internal cues Stimulators o Blood level of glycogen (storage form of glucose/sugar) o Fluctuation of hunger hormones o Biological clocks o Thirst o Starvation, fasting, eating disorders Appetite – Psychological drive to eat External cues Stimulators o Smell o Visual cues o Previous experiences o Occasion o Childhood experiences o Culture/ethnicity Hormones that increase hunger Endorphins      – hormones that stimulate hunger, pain, and sex  hormones; act like opiates in brain Ghrelin      – hormone made by empty stomach that increases desire to  eat Neuropeptide Y      – hormone that stimulates eating behavior Hormone attaches to receptor and  stimulates
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Satiety: The state of being satisfied/full Process of Satiety     : Flavor of food   Knowing a meal was just eaten  Influence of stomach and intestinal expansion and activity 
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Lecture Notes - 4/3/08 What to Eat: Lecture 2 Hunger...

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