Presents an illustrated discussion of the endocrine system, covering the major endocrine organs, what happens when the system fails or does too much, and how to build a strong endocrine system by staying active, avoiding unnecessary supplements, and eating healthy.

Reproduction in the plant and animal world is introduced, with the focus on the human system and body parts.

An introduction to the human reproductive system, explaining what it is, and discussing its different parts, how it works, some of the things that can go wrong, and how to stay healthy.