What is a "hormone"?

A hormone is a chemical substance produced by glands and released into the bloodstream to regulate and control various physiological processes. Hormones act as messengers, traveling through the bloodstream to target cells or organs, where they exert specific effects. They play a crucial role in maintaining homeostasis, growth, development, metabolism, reproduction, and mood regulation. Hormones are involved in numerous bodily functions, including regulating metabolism, controlling blood sugar levels, influencing sexual development and function, and modulating stress responses. Imbalances in hormone levels can lead to various health conditions and disorders. Overall, hormones are essential for coordinating and regulating the complex interconnected systems within the human body.