What are hormones classified as?

Hormones are classified as biologically active chemicals because they act as signaling molecules that regulate various physiological processes in the body. They are produced by endocrine glands and secreted into the bloodstream, where they travel to target organs or tissues to elicit specific responses. This classification highlights their role in communication within the body, influencing aspects such as metabolism, growth and development, mood, and reproductive functions.

While some hormones can also be proteins or peptides, the broader classification as biologically active chemicals encompasses all types of hormones, including steroids and amines, which are not proteins. This distinction is crucial for understanding the diverse nature of hormones and their mechanisms of action throughout various biological systems.