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Blueberries

Good for: Memory

Eat them regularly and you may reap big brain benefits. In a recent study, people with age-related memory decline who drank roughly two and a half cups of blueberry juice per day for 12 weeks (the equivalent of eating a cup of blueberries) made significant improvements on memory and learning tests compared with those who drank a placebo juice.

The secret component? A type of antioxidant called anthocyanins, says study co-author Robert Krikorian, PhD, a psychologist at the University of Cincinnati: "Anthocyanins have been shown in animal studies to increase signals among brain cells and improve their resilience, enhancing learning and memory."

Try this recipe: Blueberry-Blackberry Shortcakes