Hormone Basics

Hormone names can make a straightforward question feel more complicated than it needs to be. This hub introduces the basic ideas behind the vocabulary, so you can follow a more focused article without having to learn everything at once. Begin with the explanation closest to the word or relationship you want to understand.

Hormones Explained introduces signals, receptors, and feedback. Estrogen vs. Progesterone compares two names that often appear together, while the anterior-pituitary guide looks at one part of the signaling network in more detail. These guides move from a broad picture toward a specific example; you can read them in that order or choose just one.

The Endocrine System offers another route into the network, and Hormones A–Z is useful for looking up a term quickly. Throughout this section, a general explanation is a foundation for understanding other material, not a way to infer a personal hormone level from a feeling. Return to Start Here whenever you would rather browse by symptom or life stage.

Available guides

• What Are Hormones? A Simple Guide to Your Body’s Messengers
• Estrogen vs. Progesterone: How They Work Together
• The Pituitary Gland: How Your Body’s Hormone Hub Works
• What Is a Hormone Receptor? How Your Cells Hear Hormones
• Prolactin Explained: What It Does and Why It’s Tested
• Female Hormone Levels by Age: How to Read Your Results
• Gut Health and Hormones: What We Know So Far
• Soy and Hormones: What Phytoestrogens Really Do
• Hormones After Menopause: What Changes and What Keeps Going
• Where Is Estrogen Made? Your Body’s Sources at Every Age
• Endocrine Disruptors: How to Reduce Everyday Exposure

Explore related topics

• The Endocrine System
• Hormones A–Z