The Diet Myth: The Surprising Truth About What We Eat by Dr. Tim Spector explores how gut health and the microbiome play a central role in weight, metabolism, and overall health. Drawing on decades of research and large-scale studies, Spector challenges conventional dieting wisdom and explains why individual responses to food vary widely. The book reveals how diversity in gut bacteria, lifestyle, genetics, and environmental factors influence how our bodies process food and why one-size-fits-all diets often fail. With practical insights on eating for gut health, understanding cravings, and optimizing nutrition for long-term well-being, The Diet Myth empowers readers to make science-backed choices that support both their health and their happiness.