3) Blueberry Juice. The high amounts of flavonoids and disease-fighting antioxidants in blueberry juice may help reduce the chances of Alzheimer's Disease and other mental health disorders. A study done at the University of Cincinnati found a link between blueberry juice and cognitive aging—results concluded that those who consumed blueberry juice scored higher on memory tests as opposed to those who consumed placebo drinks. Consumption may also prevent diabetes and increases the amount of nitric oxide in the body, which helps lower blood pressure