Our Blueberry Fruit Extract is a highly concentrated 4:1 form. This provides more of the beneficial compounds Anthocyanins and Pterostilbene. Evidence has shown that these ingredients can protect the brain, improve cognitive function, and slow the progress of cognitive decline. Blueberries have also been shown to increase nerve growth factor in the brain (NGF). NGF helps with the preserving and development of nerve cells in the brain.