Arcuate nucleus

The arcuate nucleus is a small cluster of nerve cells located in the hypothalamus—a part of the brain that helps regulate many body functions. It plays a key role in controlling hunger, energy use, and hormone release. By sensing levels of nutrients and hormones in the blood, the arcuate nucleus helps manage appetite, stimulate or suppress food intake, and coordinate other bodily processes related to metabolism and growth. Its proper function is essential for maintaining an energy balance and overall health.