What hormone is known for its role in suppressing hunger?

Leptin is recognized for its critical function in signaling satiety and regulating hunger. Produced by adipose (fat) tissue, leptin communicates to the brain about the body's energy reserves. When fat stores increase, leptin levels rise, which helps to suppress appetite and promote energy expenditure. This feedback mechanism allows the body to maintain energy balance and avoid overeating.

When leptin is functioning correctly, it helps ensure that individuals do not consume more food than necessary for their energy needs. This hormone plays an essential role in long-term energy homeostasis, contrasting with other hormones that may stimulate appetite or are involved in short-term hunger cues.

Understanding leptin's role helps explain why obesity can lead to leptin resistance, where the brain does not respond appropriately to high leptin levels, resulting in disrupted hunger regulation and overeating. This makes leptin a key hormone in discussions about weight management and metabolic health.