To date, the mechanism of how fruits like blueberries improve memory and brain function is unclear, but it is believed that the phytochemicals they contain cross the blood brain barrier and affect learning and memory by enhancing existing neuronal (brain cell) connections. The researchers are also suggested that the improvement in memory is directly related to stimulated “signaling proteins” that can be found in the the hippocampus. The hippocampus is the part of the brain that controls memory and learning.
In a study, patients who added blueberries to their daily diet over a period of 12 weeks noticed improvements in their mental function, specifically spatial working memory, in as little as 3 weeks. The additional good news about blueberries is that besides the benefits it provides for memory function, you can enjoy this healthy snack daily and your entire body will reap the benefits of its antioxidants.