Ultra‑processed foods hurt focus
- A recent study found eating more ultra‑processed foods was linked to worse attention even in otherwise healthy eaters. (medicalxpress.com) - The research looked at middle‑aged and older Australian adults and appeared in Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring. (medicalxpress.com) - A Frontiers review ties ultra‑processed reliance to social vulnerability and policy challenges, expanding concern beyond weight and heart disease. (frontiersin.org)
Foods that come out of factories more than kitchens were linked to worse focus in a new Australian study, even among people whose overall diets looked healthy. (alz-journals.onlinelibrary.wiley.com) Researchers from Monash University, the University of São Paulo and Deakin University analyzed 2,192 dementia-free adults in Australia aged 40 to 70. They measured diet with a food-frequency questionnaire and measured thinking skills with the Cogstate Brief Battery. (alz-journals.onlinelibrary.wiley.com) For every 10% increase in calories from ultra-processed foods, attention scores were 0.05 points lower and dementia-risk scores were 0.24 points higher. The paper said those links held even after accounting for adherence to a Mediterranean-style diet. (alz-journals.onlinelibrary.wiley.com) Ultra-processed foods are industrial formulations made with ingredients and additives not usually used in home cooking. In the Monash release, lead author Barbara Cardoso said a 10% increase was roughly like adding a standard packet of chips to a day’s diet. (monash.edu) The participants got about 41% of their daily energy from ultra-processed foods, close to the Australian average of 42%, according to the Monash release. The study did not find a direct link with memory loss in this sample. (medicalxpress.com) The study was cross-sectional, which means it captured diet and cognition at one point in time rather than tracking changes over years. That design can show an association, but it cannot prove the foods caused the drop in attention. (alz-journals.onlinelibrary.wiley.com) This research lands as public-health groups are widening the case against ultra-processed foods beyond obesity and heart disease. A 2026 Frontiers editorial said large cohort studies and meta-analyses have tied higher intake to weight gain, cardiometabolic risk, all-cause mortality and mental health conditions. (frontiersin.org) That same Frontiers editorial said countries including Brazil, Canada, France, India, Mexico and Chile now emphasize limiting ultra-processed foods in dietary guidance. It also pointed to policies such as front-of-package warning labels, taxes, marketing restrictions and efforts to improve food environments. (frontiersin.org) The editorial also linked heavy reliance on ultra-processed foods to social vulnerability, including food environments that make fresh food harder to get. The new Australian study adds attention span to the list of concerns attached to diets built around those products. (frontiersin.org; alz-journals.onlinelibrary.wiley.com)
