American Dish
The American diet has become dominated by ultra-processed foods, but it’s taken a while for scientists to even begin to understand what this really means for our health. One of the researchers at the cutting edge of our nascent understanding is Kevin Hall. A physicist by training, Hall spent 21 years at NIH becoming the country's foremost nutrition scientist before resigning from the agency in 2025. Julia Belluz is an award-winning health journalist and contributing opinion writer at the New York Times who has done some of the best reporting on nutrition and obesity anywhere. Together, they wrote Food Intelligence — an Economist Book of the Year. It's one of the most honest and nuanced books about food and nutrition I've read in a long time, and this conversation reflects that. Highlights: – Kevin's landmark 2019 NIH clinical trial: how it was designed, what it found, and why it was so controversial – Why nutrition science is so underfunded — and how that created a vacuum filled by industry, influencers, and ideology – The MAHA paradox: a movement with the right rhetoric (sometimes) but lacking serious investment in the science to back it up – What the continuous glucose monitor and biohacking craze gets wrong – How food environments (not willpower) drive what we eat, and what changing them would actually require – Kevin's firsthand account of being censored as a government scientist and why he ultimately left NIH after 21 years – What systemic change could actually look like: SNAP reform, marketing restrictions, and making healthy food genuinely competitive Where to find Kevin Hall & Julia Belluz: Check out their book Food Intelligence [https://www.penguinrandomhouse.com/books/671334/food-intelligence-by-julia-belluz-and-kevin-hall-phd/] Kevin Hall’s website [https://www.kevinhallphd.com/] Follow him on Instagram [https://www.instagram.com/kevinh_phd/?hl=en] Julia Belluz’s website [https://www.juliabelluz.com/] Follow her on Instagram [https://www.instagram.com/jbelluz/?hl=en] Mentioned in this episode: Kevin Hall's 2019 ultra-processed foods clinical trial — [https://www.cell.com/cell-metabolism/fulltext/S1550-4131(19)30248-7]Cell Metabolism [https://www.cell.com/cell-metabolism/fulltext/S1550-4131(19)30248-7] How Washington Keeps America Sick and Fat [https://www.politico.com/news/agenda/2019/11/04/why-we-dont-know-what-to-eat-060299] — Helena's 2019 Politico investigation on nutrition research underfunding Kevin Hall's departure from NIH — CNN [https://www.cnn.com/2025/04/16/health/nih-nutrition-researcher-departs] Stay in touch: Sign up for Helena’s must-read weekly newsletter: Food Fix [https://foodfix.co/]. Follow American Dish on Instagram [https://www.instagram.com/americandishpodcast/] and YouTube [https://www.youtube.com/@AmericanDishPodcast]. Send ideas and feedback to info@foodfix.co [info@foodfix.co] Check out Forked [https://podcasts.apple.com/us/podcast/forked-presented-by-reap-sow/id1821950125], the food politics podcast Helena co-hosts with the Food & Environment Reporting Network. Credits: This episode was edited by Adrienne Cruz [https://adriennecruz.com/]. Original music by David Bottemiller.
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