According to Psychology Today, the following five foods have brain-boosting power.

Blueberries. Wild blueberries are filled with antioxidants that attack smarts-sapping free radicals. Studies of rats show that a blueberry-rich diet improves memory and motor skills and reverses age-related declines in balance and coordination.

Dark Leafy Greens. Vegetables like chard and kale break down homocysteines, enzymes that in high levels are linked to cognitive decline and Alzheimer's disease.

Fatty Fish. Fish like salmon, sardines and herring are packed with Omega-3 fatty acids, and research has shown that people who eat these fish at least once a week are less likely to get Alzheimer's disease.

Spinach. Research has shown that spinach slows down age-related problems in the central nervous system and cognitive deficits.

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