An inspiring guide to the life-changing power of fermentation from world-leading gut scientist and no. 1 bestselling author Tim Spector From kombucha and kefir to sourdough, miso and coffee, Professor Tim Spector dispels the myths around fermented foods. He explains what fermented foods are, what to look for when buying them, how to make them at home, and why adding simple ferments to everyday meals can transform your gut health and overall well-being. Blending cutting-edge science with practical, reassuring advice, Ferment shows how small changes to what's on your plate can make a big difference to your health.