Have you ever noticed how the shape, folds and wrinkles of a walnut resembles the human organ, the brain? The shape of the nut even approximates the body part, looking like it has left and right hemispheres. And its no surprise walnuts are nicknamed “brain food”—they have a very high content of omega-3 fatty acids, which help support brain function. According to Journal of Alzheimer’s Disease report, adding walnuts to your diet may help boost your memory . The antioxidants in walnuts may help counteract age-related cognitive decline and even reduce the risk of neurodegenerative diseases, including Alzheimer’s. Walnuts also may enhance signaling within the brain and encourage new messaging links between brain cells. Eating about 5 whole walnuts a day, may be all it takes to take advantage of their beneficial properties.