Healthy people, ages 50 to 69, drank a mixture high in antioxidants called cocoa flavanols for three months. And they performed better on a memory test than people who drank a low-flavanol mixture.
On average, they performed like people two to three decades younger on the memory task. They performed about 25 percent better than the low-flavanol group.
But you should remember that sugar hurt your memory. Thus you shouldn’t eat a lot of white chocolate but dark chocoalte.