Harvard study links ultra-processed foods to higher risk of cognitive decline in older adults
By
Joyce Hendley
Summary
A Harvard study published in the American Journal of Public Health analyzed data from 5,370 older adults and found that those who consume the most ultra-processed foods (sugary drinks, deli meats, fast food) face a significantly higher risk of cognitive decline and dementia compared to those who eat whole, minimally processed foods. The study was published online June 3, 2026.
Source
Twitter / XHarvard study links ultra-processed foods to higher risk of cognitive decline in older adultshealth.harvard.eduKey quotes
· 1 pulleda new study suggests that older adults who eat the most ultra-processed foods — think sugar-sweetened drinks, deli meats, and fast food — may face a meaningfully higher risk of cognitive decline compared with those who favor whole, minimally processed foods
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