What region of the brain controls appetite?

The hypothalamus is the brain region that controls appetite. This small structure helps regulate hunger, food intake, energy balance, body temperature, thirst, sleep, and several hormone systems.

Within the hypothalamus, the arcuate nucleus is especially important for appetite regulation. It contains neurons that respond to signals such as leptin, insulin, and gut hormones. Some of these neurons promote feeding through neuropeptides including neuropeptide Y and agouti-related peptide, while others promote satiety through proopiomelanocortin pathways.

The hypothalamus does not work alone. The digestive system sends signals through hormones and the vagus nerve, while reward and emotion networks influence how appealing food feels. Ghrelin, produced largely by the stomach, tends to increase hunger; leptin, produced by fat tissue, generally signals stored energy and suppresses food intake.

The lateral and medial hypothalamic areas were once described simply as hunger and satiety centers. Modern research shows that appetite is controlled by a much more interconnected network, but the hypothalamus remains the key regulatory hub.