I am a protein produced by fat cells and monitored by the hypothalamus. When in abundance,I cause the brain to increase metabolism. What am I?

Question

Quizplus · Accepted Answer

Leptin is a protein hormone produced by fat cells and monitored by the hypothalamus. When there is an abundance of leptin, it signals the brain to increase metabolism and decrease appetite. This helps to maintain a healthy balance of energy expenditure and intake. PYY is also a hormone involved in appetite regulation, but it is produced by the digestive system, not fat cells. Ghrelin and orexin are hormones that stimulate appetite and are produced by the stomach and hypothalamus, respectively.

I Am a Protein Produced by Fat Cells and Monitored