Which hormone is associated with appetite regulation along with leptin?

Ghrelin is often referred to as the "hunger hormone" because it plays a significant role in regulating appetite. It is produced primarily in the stomach and signals the brain to increase hunger and food intake. Ghrelin levels rise before meals and decrease after eating, making it a key player in the short-term regulation of appetite.

Alongside leptin, which is produced by fat cells and signals satiety (the feeling of fullness), ghrelin acts as a counterbalance in appetite regulation. While leptin helps to inhibit hunger, ghrelin stimulates it, highlighting how both hormones work together to maintain energy balance in the body.

Understanding the roles of ghrelin and leptin is crucial in the context of nutrition and metabolism, as imbalances can lead to issues like obesity and eating disorders.