"Explores and explains this fascinating hidden world: what hormones are, what they do and why we can't live without these super-fast chemical messengers. It includes in-depth profiles on each of the most important hormones at work in the human body and helpful advice on how we can look after our own health through greater knowledge of our hormones."-- Provided by publisher.

"Discover the hidden world of the chemical messengers in your body"--Cover. "A Firefly book"--Title page verso.

Foreword -- What Your Hormones Do For You -- Hormones 101 -- Where Next? -- Glossary -- Index -- Picture Credits.