Ultra‑processed foods — cognitive hit
A major NIH‑linked study reports adults over 50 who eat high levels of ultra‑processed foods experience cognitive decline 35% faster than peers — spurring calls for clearer food labels (altitudesmagazine.com). Policy ripples are already visible: California is considering warning labels on certified UPFs, and a separate analysis found 71% of baby foods now qualify as ultra‑processed (dailymail.co.uk) (newskarnataka.com).
A 2022 cohort published in JAMA Neurology followed 10,775 adults for a median of eight years and reported that participants with higher ultra‑processed food intake had a 28% faster rate of global cognitive decline and a 25% faster decline in executive function versus the lowest consumers. (jamanetwork.com) Analyses using the NIH‑funded Health and Retirement Study show similar signals: an American Journal of Clinical Nutrition paper using HRS data (n≈4,750) found differential risks by UPF category, and a Frontiers analysis of HRS-linked data (n=1,408) reported mean UPF intake of 42.3% of energy/day and an adjusted odds ratio of ~2.08 for executive‑function impairment in higher UPF quintiles versus the lowest. (ajcn.nutrition.org) A separate large Neurology analysis of 12,772 Brazilian adults focused on low‑ and no‑calorie sweeteners (common in UPFs) and found the highest consumers experienced cognitive decline equivalent to about 1.6 years of additional brain aging, with the strongest effects in people under 60 and those with diabetes. (aan.com) Policy responses are already moving: California Assembly Bill 2244, introduced by Assemblymember Jesse Gabriel, would create a voluntary “California Certified” front‑of‑pack seal for foods that meet a state standard for not being ultra‑processed and would direct the Department of Public Health to set rules and accredit certifiers (building on a 2025 law) if enacted. (legiscan.com) A February 2026 Nutrients study from The George Institute analyzed 651 infant and toddler products from major U.S. grocery chains and found 71% met NOVA criteria for ultra‑processing, identified more than 100 unique additives across products, and reported higher sugar and sodium content among UPF baby foods. (georgeinstitute.org) The evidence base is mixed: a 10‑year Dutch LASA analysis of 1,371 adults ≥55 found no clear association between total UPF intake and cognitive decline, and commentators note that most human studies are observational and cannot prove causation without randomized trials. (link.springer.com)
