Do you eat these nutritionist-recommended 5 foods every day? 1. Berries are rich in antioxidants proven to slow cognitive decline. 2. Dark leafy greens have a higher nutrient density than any other food. 3. Purple cabbage boasts the same benefits as berries at a fraction of the cost. 4. Apples can potentially reduce the chance of stroke and heart attack. 5. Mushrooms have a natural ability to lower cholesterol.