Drink more milk for healthy brain activity for life. Milk is a veritable treasure trove of B vitamins, potassium, magnesium and calcium that all have incredibly important functions for taking care of your brain. These vitamins and minerals do a great job in supporting the functions of your brain. The healthier the brain, the better the memory will be. Make sure that your diet has good sources of Omega-3 fatty acids. Most commonly found in fish, these fatty acids do a superb job of keeping your brain on its toes. Numerous studies have shown a positive benefit to the brain when the diet contains omega-3's. Try adding pink salmon, walnuts and flax seed, so you can get this essential fat.