"It is not clear, in humans, what specific impacts reduced brain blood flow has, but the magnitude of the blood flow reduction, around 30 percent on average, is certainly cause for concern," Chris Schaffer, associate professor of Biomedical Engineering at Cornell, explains to New Atlas. "In the Alzheimer's disease mice, we found that increasing blood flow by interfering with the adhesion of white blood cells led to rapid and significant improvement in the performance on memory tasks."