Update your shopping list with blueberries, strawberries, raspberries, and even blackberries! "Berries are one of our most polyphenol-rich foods that go a long way to keep our inflammatory index down, which is important for brain health since the brain is particularly susceptible to oxidative stress," Moon tells us. "The MIND Diet includes berries at least twice a week. When they're out of season or you're just worried about them going bad, I like to recommend frozen."