Editors Reads Verdict
Van Tulleken's investigation into ultra-processed food is the most comprehensive and scientifically rigorous examination of the topic available — he combines personal experimentation, industry analysis, and a clear-eyed reading of the research into a genuinely alarming and important book.
What We Loved
- The research coverage is unusually comprehensive and carefully qualified
- Van Tulleken's self-experimentation with an 80% UPF diet adds vivid personal evidence
- The industry analysis — how processed food is designed and marketed — is devastating
- The book avoids moralizing about individual choices while being clear about systemic harms
Minor Drawbacks
- The sheer volume of evidence can be overwhelming
- The regulatory and policy chapters are less compelling than the science sections
- Some readers may find the personal narrative sections slow
Key Takeaways
- → Ultra-processed food is specifically engineered to override satiety signals
- → The NOVA classification system defines UPF by process, not by nutrient content
- → UPF consumption is associated with a striking range of negative health outcomes across the research literature
- → The food industry uses tobacco industry tactics to obscure research and influence regulation
- → Individual choice is constrained by engineered palatability and economic accessibility of UPFs
| Author | Chris van Tulleken |
|---|---|
| Publisher | W. W. Norton |
| Pages | 368 |
| Published | May 18, 2023 |
| Language | English |
| Genre | Health, Science, Narrative Nonfiction |
| Difficulty | Intermediate |
| Best For | Health-conscious readers, public health professionals, policy makers, and anyone who has noticed that modern food is harder to stop eating than it used to be. |
What Is Ultra-Processed Food?
The NOVA classification system, developed by Brazilian nutritionist Carlos Monteiro, classifies food not by its nutrient content but by the degree of industrial processing it has undergone. Ultra-processed foods (UPFs) are those that contain ingredients not typically used in home cooking — emulsifiers, flavor enhancers, colorants, sweeteners — and are manufactured through industrial processes designed to be convenient, hyperpalatable, and long-lasting.
By this definition, ultra-processed food constitutes 57% of calories consumed in the United Kingdom and 60% in the United States. The figure is not going down.
Chris van Tulleken, an infectious disease doctor and science communicator, spent years reading the research on UPF health outcomes, and what he found disturbed him enough to write this book. The correlations between UPF consumption and negative health outcomes — obesity, type 2 diabetes, cardiovascular disease, certain cancers, depression, cognitive decline, inflammatory bowel disease — are extensive, consistent across studies and countries, and dose-dependent.
The Self-Experiment
To understand not just the research but the experience of UPF dependence, van Tulleken ate a diet of 80% ultra-processed food for one month while being monitored by researchers at University College London. The results were disturbing: significant weight gain, disrupted gut microbiome, changes to brain connectivity associated with addictive behavior, and subjective reports of being unable to stop eating even when full.
The self-experiment is the book’s most visceral section and the most persuasive for readers who are skeptical of epidemiological correlations.
The Industry Analysis
The book’s most politically important contribution is its detailed analysis of how the ultra-processed food industry has systematically undermined nutrition science, captured regulatory agencies, and deployed tobacco-industry-style tactics to protect its products from meaningful oversight. Van Tulleken traces the specific strategies: funding research favorable to UPF, promoting the idea that individual choice rather than product design is responsible for overconsumption, and lobbying against evidence-based dietary guidelines.
The industry section is the book’s most alarming because it demonstrates that the problem cannot be solved by better individual choices alone — the choices available are themselves the product of industry decisions.
Our rating: 4.4/5 — The most thorough and scientifically rigorous examination of ultra-processed food available, combining personal experimentation with industry analysis and research synthesis into a genuinely important document.
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