Blueberries can improve a person's memory because they contain chemical compounds known as flavonoids that can alter brain function, research suggests. Flavonoids are pigments that naturally occur in plants, and after they enter the body through diet, they have been found to make their way to the brain. Although it is not known exactly how flavonoids work in the brain, it is thought that they improve memory and increase cognitive function by stimulating the existing connections between brain cells and helping to generate new connections.
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