ghrelin

Ghrelin is a hormone produced mainly in the stomach that signals to your brain when you're hungry. It increases appetite and prompts the body to store energy, especially before meals. Ghrelin levels rise when you're fasting or between meals, then decrease after eating. Besides helping regulate hunger, it also influences other functions like hormone release and energy balance. Understanding ghrelin is important for insights into appetite control, weight management, and conditions like obesity or eating disorders.