Explores the functions and structure of different glands and hormones, and how the endocrine system sends chemical messengers around our bodies. Also explains the different illnesses and factors that can affect our hormones, from diabetes to drug abuse, and outlines ways that we can keep our hormonal systems healthy.

Includes index and glossary.

The hormonal system -- What is a hormone? -- Hormones and feedback -- Hormones and health -- Main hormonal gland -- Anterior pituitary -- Posterior pituitary and ADH -- Pituitary problems -- Thyroid hormones -- Parathyroids -- Thyroid disorders -- The thymus --- Hormones of the pancreas -- Problems of the pancreas -- Adrenal glands -- Adrenal cortex -- Adrenal medulla -- Hormones and stress -- Adrenal problems -- Other hormones -- What can go wrong with my hormones?