GAL, or Galanin, is a neuropeptide that plays a significant role in various physiological processes in the body. It is involved in regulating functions such as pain perception, mood, and appetite. GAL interacts with specific receptors in the brain and other tissues, influencing how the body responds to stress and emotional stimuli. In addition to its role in the central nervous system, GAL is also found in the peripheral nervous system. It contributes to the regulation of hormone release and can affect metabolic processes. Research continues to explore the potential therapeutic applications of GAL in treating conditions like depression and obesity.