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Take cauliflower. Kind of like walnuts, it visually reminds you of the brain. And sure enough, cauliflower is a brain-boosting superstar.. It's a great source of vitamin K, which is said to keep your mind sharp as you age and boost memory, as well as folate.
Other ways to protect memory as you age. Diet isn't the only way to preserve memory. If you want to keep your brain sharp as you get older, follow these recommendations: Control your cholesterol, blood sugar, and blood pressure levels with diet, exercise, and medicines such as statins or beta-blockers if you need them. Quit smoking.