About the Book: A practical, myth-busting guide to testosterone and men’s hormone health from leading endocrinologist Dr Jeff Foster. Drawing on clinical experience, this accessible book explains how testosterone affects energy, mood, focus, sleep, strength, sexual health and overall wellbeing. Learn to recognise the signs of low testosterone, understand common causes of deficiency, and discover what modern treatments can and cannot do. Challenging common misconceptions and stigma, this informative guide shows why maintaining healthy hormone levels is an important part of ageing well, building confidence and supporting long-term health. An essential resource for men seeking to better understand testosterone, vitality and hormonal wellbeing.