What makes me feel hungry?

Wednesday 22nd July 2009
Submitted by Luis Villazon
Laura Finnegan, Ballinasloe

The vagus nerve sends information about the fullness of the stomach to the hypothalamus in the brain. Hunger is also controlled by hormones, including insulin, leptin, ghrelin and cholecystokinin. Levels of these change according to the levels of various nutrients in the blood and digestive tract.

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