https://www.economist.com/science-and-technology/2024/11/25/scientists-are-learning-why-ultra-processed-foods-are-bad-for-you />Skip to content * Menu * Weekly edition * The world in brief * Search Log in * Opinion + Leaders + Letters to the editor + By Invitation + Current topics o US elections 2024 o War in Ukraine o War in the Middle East o The World Ahead 2025 o Climate change o Coronavirus o The world economy o Artificial intelligence * Current topics + US elections 2024 + War in Ukraine + War in the Middle East + The World Ahead 2025 + Climate change + Coronavirus + The world economy + Artificial intelligence * World + The world this week + China + United States + Europe + Britain + Middle East & Africa + Asia + The Americas + International + A-Z of international relations + A-Z of military terms + A-Z of US politics + US election poll tracker * In depth + Science & technology + Briefing + Graphic detail + The Economist explains + Special reports + Technology Quarterly + Essay + Schools brief * Business & economics + Finance & economics + Business + Big Mac index + A-Z of economics + Economic & financial indicators * Culture & society + 1843 magazine + Culture + Obituary + The Economist reads + Christmas Specials * More + Podcasts + Newsletters + Video + The Economist app + SecureDrop + Subscriber events + Economist Education courses + Economist Enterprise * My Economist * Saved stories * Log out * Saved stories * Account * Log out Search [ ] Try AI-powered search Science & technology | Nutrition Scientists are learning why ultra-processed foods are bad for you A mystery is finally being solved A bowl of Froot Loops cereal.Photograph: Getty Images Nov 25th 2024 Share For millennia, people have altered food to please their palates. More than 3,000 years ago Mesoamericans, living in what is Mexico and Central America today, cooked corn kernels in a solution of wood ash or limestone. The process, known as nixtamalisation, unlocked nutrients and softened the tough outer shells of the corn, making them easier to grind. Share Reuse this content Discover more illustration of a blue laboratory flask with a hand holding it from the side. A large explosion of white papers is erupting from the top of the flask Scientific publishers are producing more papers than ever Concerns about some of their business models are building Comedy Club audience. The two types of human laugh One is caused by tickling; the other by everything else --------------------------------------------------------------------- The human small intestine. Scientists are building a catalogue of every type of cell in our bodies It has thus far shed light on everything from organ formation to the causes of inflammation --------------------------------------------------------------------- How squid could help people get over their needle phobia Cephalopod ink propulsion is inspiring an alternative to syringes Norway's Atlantic salmon risks going the way of the panda Climate change and fish farming are endangering its future Artificial intelligence is helping improve climate models More accurate predictions will lead to better policy-making --------------------------------------------------------------------- --------------------------------------------------------------------- * Subscribe * Economist Enterprise * Reuse our content * Help and contact us Keep updated * * * * * * * * Published since September 1843 to take part in "a severe contest between intelligence, which presses forward, and an unworthy, timid ignorance obstructing our progress." The Economist * About * Advertise * Press centre * SecureDrop The Economist Group * The Economist Group * Economist Intelligence * Economist Impact * Economist Impact Events * Working here * Economist Education Courses * Executive Jobs To enhance your experience and ensure our website runs smoothly, we use cookies and similar technologies. Manage Cookies * Terms of Use * Privacy * Cookie Policy * Accessibility * Modern Slavery Statement * Sitemap * Your Data Rights Copyright (c) The Economist Newspaper Limited 2024. All rights reserved.