INSTANT NEW YORK TIMES BESTSELLER * USA TODAY BESTSELLER * WALL STREET JOURNAL BESTSELLER

Learn how to reboot your metabolism, build strength, and extend your life with this accessible new guidebook that demonstrates the importance of muscle for health and longevity from the founder of the Institute for Muscle-Centric Medicine®.

After years of watching patients cycle through her practice, Dr. Gabrielle Lyon noticed a pattern. While her patients struggled with a wide range of conditions, they all suffered from the same core problem: they had too little muscle rather than too much fat.

When we think about muscle, we tend to think about strength or aesthetics, but in reality, muscle accounts for so much more than that. As the body’s largest endocrine organ, muscle actually determines everything about the trajectory of health and aging. Many of the conditions Dr. Lyon’s patients were experiencing were actually symptoms of underdeveloped or unhealthy muscle.

Now, Dr. Lyon offers an easy-to-follow food, fitness, and self-care program anchored in evidence and pioneering research that teaches you how to optimize muscle—no matter your age or health background. Discover how to overcome everything from obesity to autoimmune disorders and avoid diseases like Alzheimer’s, hypertension, and diabetes by following Dr. Lyon’s powerful new approach to becoming forever strong.

“Lyon’s tough love approach will help readers overcome mental hurdles…[in this] encouraging manual on staying fit.”

“Forever Strong is a must-read guidebook for living well at any age. The comprehensive assessments go beyond your basic checkup to track the health metrics that matter. The tools offer rare and customized recommendations to improve your muscle and metabolic health.”

“Dr. Lyon focuses on skeletal muscle, perhaps the most important organ for longevity, fitness, and health. She asks the question, ‘What if we stopped focusing on losing fat and concentrated on building muscle instead?’ It is a question that should merit serious consideration if we want to improve our health at a population level.”

“It’s crazy what a slight shift in perspective can do for a body, mind and soul. Muscle-Centric Medicine has revolutionized my health and quality of life. My life force is back! Implementing Dr. Lyon's teachings has allowed me to perform to the best of my ability and participate in the activities I love. I aspire to embody sustained excellence, Dr. Lyon’s guidance is making it a reality.”

“Dr. Lyon is changing the conversation about fat loss and longevity. This must-read book provides a fresh, research-backed approach using nutrition, training, and mindset to make you exceptionally healthy and forever strong.”

“Dr. Gabrielle Lyon is creating a movement with this book... a muscle movement! Forever Strong is taking muscle out of the pithy box of aesthetics and providing evidence on why targeting muscle (not fat) is the key to transforming our metabolism, reversing chronic disease, and fending off the ravages of early aging. This book is a game-changer.”

“Dr. Gabrielle Lyon is an expert at her craft. She cares deeply about her patients and has helped and continues to help me perform to my full potential as a leader and entrepreneur. Dr. Lyon has put her life’s work into this book to help you become forever strong.”

“Dr. Lyon is my go-to for all things protein and muscle. In Forever Strong, she blends cutting-edge, clinically relevant science with case studies from her patients over the last decade. This book truly has a wealth of incredible information.”

“Dr. Gabrielle Lyon has dedicated her life to improving your health and well-being. These tools could prevent years, perhaps even decades, of unnecessary suffering for people all around the world.”