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Diets around the World Are Becoming More Similar

The world is entering a new era of severe obesity


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People in many developing nations, such as Liberia and Georgia, are gaining weight at a rapid pace, faster since 2000 than they did from 1975 to 2000 (among pink icons). And although the rate of weight gain in many developed countries since 2000 is slower than it was prior (among orange icons), it has kept going up. When taken together, the two trends mean that “for much of the world, we are passing from an era of obesity into a new era of severe obesity,” says Majid Ezzati, lead scientist on a far-reaching study of 200 countries published recently in the Lancet. Researchers “are surprised by the extent of severe obesity,” he says (bar chart). If the trajectory continues, Ezzati says, it will be virtually impossible to meet the World Health Organization's global goals of halting the rises in obesity and diabetes by 2025.

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SOURCE: “TRENDS IN ADULT BODY-MASS INDEX IN 200 COUNTRIES FROM 1975 TO 2014: A POOLED ANALYSIS OF 1698 POPULATION-BASED MEASUREMENT STUDIES WITH 19.2 MILLION PARTICIPANTS,” BY NCD RISK FACTOR COLLABORATION, IN LANCET, VOL. 387; APRIL 2, 2016; NCD RISK FACTOR COLLABORATION www.ncdrisc.org (dataGraphic by Jen Christiansen

Mark Fischetti has been a senior editor at Scientific American for 17 years and has covered sustainability issues, including climate, weather, environment, energy, food, water, biodiversity, population, and more. He assigns and edits feature articles, commentaries and news by journalists and scientists and also writes in those formats. He edits History, the magazine's department looking at science advances throughout time. He was founding managing editor of two spinoff magazines: Scientific American Mind and Scientific American Earth 3.0. His 2001 freelance article for the magazine, "Drowning New Orleans," predicted the widespread disaster that a storm like Hurricane Katrina would impose on the city. His video What Happens to Your Body after You Die?, has more than 12 million views on YouTube. Fischetti has written freelance articles for the New York Times, Sports Illustrated, Smithsonian, Technology Review, Fast Company, and many others. He co-authored the book Weaving the Web with Tim Berners-Lee, inventor of the World Wide Web, which tells the real story of how the Web was created. He also co-authored The New Killer Diseases with microbiologist Elinor Levy. Fischetti is a former managing editor of IEEE Spectrum Magazine and of Family Business Magazine. He has a physics degree and has twice served as the Attaway Fellow in Civic Culture at Centenary College of Louisiana, which awarded him an honorary doctorate. In 2021 he received the American Geophysical Union's Robert C. Cowen Award for Sustained Achievement in Science Journalism, which celebrates a career of outstanding reporting on the Earth and space sciences. He has appeared on NBC's Meet the Press, CNN, the History Channel, NPR News and many news radio stations. Follow Fischetti on X (formerly Twitter) @markfischetti

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Scientific American Magazine Vol 315 Issue 2This article was originally published with the title “Fatter Still” in Scientific American Magazine Vol. 315 No. 2 (), p. 80
doi:10.1038/scientificamerican0816-80