Which brain region produces feelings of fullness and signals the body to stop eating?

• A. Lateral Hypothalamus
• B. Ventromedial Hypothalamus
• C. Hypothalamic Nucleus
• D. Prefrontal Cortex

Answer: (B)

Think about how the brain signals when we’ve had enough to eat. The ventromedial part of the hypothalamus acts as the satiety center, meaning it helps produce the feeling of fullness and tells the body to stop eating. When this region is active, it integrates hormonal signals that indicate energy stores are sufficient—leptin and insulin, for example—and promotes a sense of fullness, reducing food intake. If the ventromedial hypothalamus is damaged, animals (and people) can eat more than needed, highlighting its role in signaling fullness. In contrast, the lateral hypothalamus tends to drive hunger, and the prefrontal cortex governs higher-order thinking and self-control rather than immediate fullness signals.