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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Inventor Lonnie Johnson stands with his Super Soaker water guns at JTEC Energy on Wednesday, Oct. 29, 2025, in Atlanta. Johnson, a former NASA engineer, is currently working on a new energy technology through his company’s JTEC device that turns thermal heat into usable energy. (Natrice Miller/AJC)