Why Calories Taste Delicious: Eating and the Brain

From Scientific American:

The obesity epidemic has led to increased scientific interest in how the brain controls human feeding behavior. Why do we get hungry? What biological mechanisms tell us what to eat and when to stop eating? It's long been assumed that two neurobiological mechanisms largely govern food intake: one that controls the need to eat and one that controls the desire to eat. The hypothalamus in the brain regulates the homeostatic control of food intake by receiving, coordinating and responding to metabolic cues and signals from the digestive system.

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