Many sins have been committed in the name of CAUSE AND EFFECT.
So many people die of heart attacks while shovelling snow but snow is not a cause of heart attacks!
I have no problem with the EXTREME danger to the kidneys from a high diastolic ...which after all, is the LOWEST pressure the kidney ever sees, so it's CONTINUOUS and unremitting. And I have no problem with the cause and effect of stroke and very high systolic because an aneurism (even sub-clinical size) will burst only at the HIGH point of the BP wave pulse. But then there's the issue of would an artery burst without a process that first weakened it and what did that? BP maybe, maybe not. Was it necessary for flexibility of the cerebral arteries to be first compromised, after all, teeny-boppers with supple arteries don't have strokes?
Just some personal gut feelings.
An image just shot through my head: An honest doctor sees a patient (for $125) who presents with a 150 systolic.
"You know, a high systolic is associated with stiffened arteries which occurs with age and is a probable cause of heart attacks."
"I strongly recommend that you GET YOUNGER!"