Why this book
Van Tulleken's argument is that the familiar advice to just eat less fat, sugar, or salt misses what actually makes modern food dangerous: the processing itself, which strips food down and rebuilds it with industrial techniques and additives that change how quickly it's eaten, how it's absorbed, and how strongly it registers as "food" to the hormones that are supposed to tell the brain when to stop. He makes the case scientifically, walking through the NOVA classification system that sorts food by degree of industrial transformation rather than nutrient content, and personally, by spending a month eating a diet that was roughly 80 percent ultra-processed food while researchers tracked what happened to his weight, mood, sleep, and gut hormones.
The book matters because it reframes an epidemic usually blamed on individual willpower as substantially a problem of product design and industry conduct, drawing an explicit and well-documented parallel to how the tobacco industry once defended cigarettes — funding favorable research, seeding doubt, and insisting the real problem was consumer choice rather than the product itself. It became one of the most talked-about health books of its year precisely because it gave a name and a testable framework to something many readers already suspected: that some modern foods feel almost impossible to stop eating, and that this isn't a coincidence.
Who should read it
This is for readers who want a rigorous but personally grounded account of why so much of the modern food supply seems engineered to be eaten in excess, and who are willing to look past ingredient lists toward how food is actually made. It will frustrate readers looking for a simple eat-this-not-that diet plan, since van Tulleken's argument is structural and political as much as nutritional, and it will unsettle anyone who assumed a food's healthiness could be judged from its nutrition label alone.
About the author
Chris van Tulleken is a British infectious disease physician and science broadcaster based in London, trained at Oxford with a doctorate in molecular virology, known for BBC documentaries on food science and public health.