Alzheimer's caused by poor blood flow to the brain?
If true - vaccines don't seem like a good idea to me. The article also discusses BBB.
Fixing up mitochondrial dysfunction, if possible with A2-73, is likely always a good thing. However, if above is true then we need to look for root causes elsewhere, as suspected all along.
If the blood pressure lowering observations relating to A2-73 are substantiated in further studies, that would also bode well for controlling vascular issues.