#5 (Tied): MIND Diet
Like Jefferson Airplane said, "feed your head." The MIND Diet zeroes in on foods proven to affect brain health, which may lower the risk of mental decline. "Every day, you eat at least three servings of whole grains, a salad and another vegetable, along with drinking a glass of wine. On most days you snack on nuts, and every other day you eat half a cup of beans. At least twice a week you have poultry and a half-cup serving of berries (blueberries are best), and you dine on fish at least weekly. Olive oil is what you primarily use at home." Studies show that the MIND diet lowered Alzheimer's risk by about 35% for people who followed it moderately well and up to 53% for those who adhered to it rigorously.