Evidence from a review article suggests that resveratrol can have protective effects, such as helping to prevent cancers, inflammation, and neurological diseases, including Alzheimer’s and Parkinson’s. Peanuts are a legume with an excellent nutritional profile. They contain plenty of unsaturated fats and protein to keep a person’s energy levels up throughout the day. Thus, by reducing high blood pressure, the unsaturated fats in avocados may lower the risk of cognitive decline. Caffeine can, however, affect a person’s sleep and doctors do not recommend caffeine consumption for everyone.