Peter Attia· MD
interestingly there's a very significant inflection point and what i mean by that is when the blood pressure gets around 160 to 180 right in that range the risk for stroke goes significantly up and the risk for mortality goes up and that's because our body tries to auto regulate to blood pressure so when the blood pressure goes up for example the kidney the arterials will constrict to reduce the pressure load to the kidney but when it gets to about 170 it will overcome that restriction and the blood pressure will injure the kidney likewise the brain kind of responds to flow more so it tries to maintain blood flow but if the pressure gets high it tries to protect itself from the high pressure by constricting but when the pressure is like 170 the risk it can't constrict enough and you don't want it to constrict that much because it has to maintain flow and so the pressure ends up increases to the brain and increases the risk for stroke