Kidney damage from high blood pressure is worse the higher the pressure, and worse the more time one is at a higher pressure.
It’s not an on/off switch at some high pressure level.
Evidence? What is the structural design of our arteries?
I’ve asked before and no one has ever shown me any evidence or study OTHER THAN ASSOCIATIONAL STUDIES.
Is “oil pressure” bad for an engine? If too high or too low, yes. But what is that number?
Again, high blood pressure caused by clogging of the arteries is associated with a lot of bad things. But what if the arteries are not clogged?