YOUR NUTS

What do you really know about your testicles?

Most men know surprisingly little about how their reproductive system works, despite it playing a vital role in fertility, hormones, sexual health and overall wellbeing.

In Your Nuts, reproductive scientist Michael Carroll takes readers on an engaging journey into the remarkable biology of the testes. Drawing on three decades of research and clinical experience, he explains how sperm are made, how testosterone is produced, why fertility is changing, and what lifestyle, environment and health mean for male reproductive function.

Combining the latest scientific evidence with clear, engaging explanations, this accessible guide explores what we know, what we still don't know, and why understanding the testes matters to every man. Along the way, it separates evidence from myth, answers the questions many men have never thought to ask, and challenges some of the most common misconceptions about male reproductive health.

Whether you're planning a family, curious about your own health, or simply want to understand one of the least discussed organs in the human body, Your Nuts provides an authoritative, evidence-based and entertaining guide to one of the most fascinating - and misunderstood - parts of the male body.

"There is so much in Your Nuts to bring men into the conversation about reproductive health and baby making that I'd say it's a must read... Highly recommended."

Natalie Silverman

Founder, The Fertility Podcast
Co-founder, Fertility Matters at Work

"Fascinating, fact-filled and funny, Your Nuts will answer all of your questions about male reproduction-and many you hadn't even thought to ask. Dr Michael Carroll is a first-class science communicator. A must read."

David Robson
Author & Journalist

"Your Nuts is a tour de force regarding male reproductive health. It offers an excellent, remarkably clear introduction to the physiology of the male reproductive tract... It is essential reading for anyone curious about male fertility."

Professor Sheryl Homa
Professor of Andrology, University of Kent
Scientific Director, Andrology Solutions

"Michael Carroll's book elegantly describes the biology of male reproduction in a language that anyone can understand. Each chapter is filled with facts and information that should make this a valuable book for anyone who is interested in how the male reproductive system works"

Professor Allan Pacey MBE
Professor of Andrology, Deputy Vice-President & Deputy Dean,
Faculty of Biology, Medicine and Health,
University of Manchester