A study published in July 2017 by Illinois University finds that, “middle-aged participants with higher levels of lutein - a nutrient found in green leafy vegetables such as spinach and kale, as well as avocados and eggs -- had neural responses that were more on par with younger individuals than with their peers.”
Professor Naiman Khan said. "We know these foods are related to other health benefits, but these data indicate that there may be cognitive benefits as well."
Source: EurekAlert!, the online, global news service operated by AAAS, the science society.