The study, published in Appetite, examined data collected during a previous study in which people were measured for dietary intake and risk factors for cardiovascular disease. Participants were also given a series of tests designed to measure cognitive function. 

"More frequent chocolate consumption was significantly associated with better performance on (tests, including) visual-spatial memory and organization, working memory, scanning and tracking, abstract reasoning and the mini-mental state examination," researchers said.

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Rep. Marjorie Taylor Greene, R-Ga., arrives to a news conference on the Epstein Files Transparency Act, Tuesday, Nov. 18, 2025, outside the U.S. Capitol in Washington. (Julia Demaree Nikhinson/AP)

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