Obesity

Why do we gain weight so easily — and why does losing it feel like fighting our own body?

Obesity: From Biology to Behavior is a gripping popular-science journey into one of the most misunderstood health problems of our time. Blending evolutionary history, modern biology, medicine, psychology, and the realities of everyday life, this book explains in clear, engaging language why obesity is not simply a matter of weak willpower or bad choices.

From the hunter-gatherer body built for survival, to the modern food environment designed for convenience and overconsumption, Professor Bogdan Timar takes readers deep into the hidden mechanisms that drive hunger, fat storage, cravings, energy use, and the body’s fierce resistance to weight loss. Along the way, he unpacks what fat tissue really does, how appetite is regulated, why the brain can overpower intention, why diets so often fail, and how today’s treatments—from lifestyle strategies to GLP-1 therapies and metabolic surgery—are changing what is possible.

Written for the general public but grounded in real science, this book offers something rare: a compassionate, evidence-based explanation of obesity that is both medically rigorous and deeply human. It does not shame. It explains. And in explaining, it helps readers see weight, appetite, and metabolic health in an entirely new light.

Whether you are living with obesity, caring for someone who is, working in health, or simply trying to understand why body weight has become such a defining challenge of modern life, this book will change the way you think about hunger, metabolism, and the body itself.