Ultra‑processed foods study

A new MRI study found that adults who ate more ultra-processed foods had more fat inside their thigh muscles, a sign of poorer muscle quality. (rsna.org) Researchers at the University of California, San Francisco analyzed 615 adults in the National Institutes of Health-backed Osteoarthritis Initiative who did not yet have imaging evidence of knee osteoarthritis. The study, published April 14 in *Radiology*, said the average participant was 60 years old, had a body mass index of 27, and got about 41% of their prior year’s diet from ultra-processed foods. (rsna.org) Magnetic resonance imaging, or MRI, can separate muscle from fat the way a high-contrast map separates land from water. In this study, higher ultra-processed food intake tracked with higher intramuscular fat in the thigh even after researchers accounted for calories, fat intake, physical activity, and sociodemographic factors. (rsna.org) Ultra-processed foods are industrial formulations made with ingredients and additives not commonly used in home cooking, and the study listed packaged snacks, soft drinks, hot dogs, candies, frozen pizzas, and ready-to-eat meals as examples. The researchers said extra fat inside thigh muscle could raise the risk of knee osteoarthritis in people already at risk for the disease. (rsna.org) Illinois lawmakers are trying to turn that kind of evidence into school policy. House Bill 5507 would require school districts to begin eliminating “ultraprocessed foods of concern” and “restricted school foods” by July 1, 2029, and would bar vendors from offering those foods to schools starting July 1, 2032, if the bill becomes law. (ilga.gov) The bill would also require vendors to report what they sold to schools, direct the Illinois Department of Public Health to define the covered foods, and require compliance training for school food service and procurement staff. As of April 17, 2026, the measure had been re-referred to the House Rules Committee. (ilga.gov) Federal food aid rules are shifting at the same time. The U.S. Department of Agriculture says SNAP eligibility factors changed under the One Big Beautiful Bill Act of 2025, including work requirements and non-citizen eligibility, while the agency is still updating its public guidance. (fns.usda.gov) For fiscal year 2026, which runs from October 1, 2025 through September 30, 2026, the standard SNAP gross monthly income limit in the 48 states is $1,696 for one person and $3,483 for a four-person household. Those limits shape who can buy groceries at all, even as public officials and food companies argue over which packaged foods count as healthier choices. (fns.usda.gov) That argument is now showing up on store shelves as “better-for-you” snack marketing tied to the Make America Healthy Again movement. STAT reported on April 22 that products such as protein pastries and avocado-oil chips are being sold as cleaner alternatives, while nutrition experts told the outlet that the health halo can outpace the actual nutritional improvement. (statnews.com) The result is a food debate moving on three tracks at once: new imaging research, proposed school restrictions, and federal benefit rules that still determine who gets help buying food. The MRI study did not prove ultra-processed foods caused muscle changes, but it added one more measurable body signal to a policy fight that is already moving from journals to cafeterias and checkout aisles. (rsna.org)