Fiber Fueled

Dive into the science of gut health with “Fiber Fueled” by Will Bulsiewicz MD — essential reading for anyone who wants to understand the relationship between what they eat, the bacteria living in their gut, and their overall health from the inside out.

Will Bulsiewicz is a board-certified gastroenterologist who became convinced through both clinical practice and personal experience that gut microbiome diversity sits at the centre of long-term health — influencing immunity, mental wellbeing, metabolic function, inflammation, and disease risk. His core message is simple but powerful: eat more plants, more variety, more fibre. The science behind why is explained clearly and in depth. Different types of dietary fibre feed different bacterial species, and a narrow diet produces a narrow microbiome with measurable consequences for health. He examines how the modern Western diet has dramatically reduced microbial diversity compared to populations eating more traditional, plant-rich food, and what that shift means for chronic disease rates. The book includes a practical four-week programme for increasing fibre intake gradually, detailed recipes, and honest responses to the arguments made by low-carb and carnivore diet advocates.

Whether you are a gastroenterologist, a dietitian, a patient managing digestive conditions, or simply someone who wants to eat in a way that supports long-term health without extreme dietary rules, this book is one of the most useful and well-grounded nutrition guides available today.