A diet higher in ultra-processed food tracked more depressive symptoms in older adults

What the research found

Medical Xpress posted this on 21 October 2026. The card date is 1 November 2026 so the story remains in the newest list; the outlet date is 21 October 2026. Deakin University researchers followed 7,220 older adults, age 70 or older, for a median of 5.7 years. Four or more servings a day of ultra-processed food tracked a 12 percent higher rate of depressive symptoms than fewer than four servings. A more anti-inflammatory dietary pattern tracked a 7 percent lower rate than a more pro-inflammatory pattern. The report says those patterns held regardless of genetic predisposition to depression or existing low-grade inflammation. The paper, cited as Belayneh Mengist and colleagues in Molecular Psychiatry (DOI 10.1038/s41380-026-03762-6), is a target-trial emulation. It did not assign people to a diet. The report describes an anti-inflammatory pattern as more fruit, vegetables, legumes, whole grains, fish, and olive oil, and gives packaged meals and sugar-sweetened drinks as ultra-processed examples. The news story did not print a sex split, so the gender tag is all. This is not proof that changing a diet treats depression. Not medical advice.

Evidence level: Human study. A study in people, but an association isn't proof of cause.

Read the original at Medical Xpress