What Does Blood Pressure Have to Do With Alzheimer’s? - WSJ

The brain needs lots of blood to work well. That’s made doctors wonder whether high blood pressure, which can reduce blood flow to the brain, is connected to cognitive problems — especially in the elderly, in whom both high blood pressure and mental decline are common....

They found that those with high blood pressure had lower levels of blood flow overall, and those with high blood pressure and Alzheimer’s had lower blood flow than those with high blood pressure but not Alzheimer’s....