However, current diagnostic tools involve painful spinal taps, expensive scans and cognitive tests that can be limited in their accuracy. For years, the prevailing consensus in Alzheimer’s research and clinical care has been the “amyloid cascade hypothesis.” This theory suggests that a protein fragment called amyloid beta is the main culprit in Alzheimer’s. “They cannot dilate the cerebral vessels to bring more blood in and provide adequate blood perfusion to the brain. Similar to training methods athletes use to enhance performance, preliminary data show that it can improve cerebral blood flow regulation. Preliminary results suggest this can also positively impact cerebral blood flow regulation.