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A myth-busting guide on testosterone from leading male health expert Dr Jeff Foster to help men feel stronger, healthier, and get back to their best selves.
Testosterone: it's a powerhouse hormone that fuels men's energy, focus, mood, and vitality at every age. Yet despite its importance, testosterone is surrounded by confusion, stigma, and half-truths.

In this accessible, myth-busting guide, leading expert in male health Dr Jeff Foster sets the record straight. Drawing on years of clinical experience as an NHS GP Partner and a Private GP with a specialist interest in men's health, he explains how testosterone really works; why deficiency is far more common than most people think, and how it can impact everything from sleep to mental health, strength to sex, and overall wellbeing.

Learn how to spot the signs of low testosterone; what modern treatments can (and can't) do, and why looking after your hormone health is one of the best investments you can make for your future.

Testosterone is not simply about muscles and libido. It's about health, confidence, and living life to the fullest.

This is the men's health book all men need to read:

'Essential reading for every man' - James Haskell

'No-one knows more about testosterone and men's health than Dr Jeff' - Tom Hopper

'Dr Jeff is the ultimate expert in men's health - you need this book' - Jason Fox

'Eye-opening, informative and genuinely useful - a must-read for every man' - Dr Naomi Potter

'I found Dr Jeff's book so insightful and enriching on the subject of testosterone, I had an instant intellectual tumescence' - Russell Kane

Book details and technical specifications

Format: Paperback / softback
ISBN13: 9780008787813
Published: July 2026

Number of pages: 352
Width: 153 mm
Height: 234 mm
Depth: 30 mm

Publisher: HarperCollins Publishers