This video (external link) is from


Dr. Greger reads that high blood pressure is the result of "disease-dysfunctional arteries", without explaining.

Dr. McDougall has said elsewhere that the body increases blood pressure as compensation, when arteries have been narrowed enough to restrict blood flow to vital organs. This would account for raising diastolic (the lower) blood pressure.

If arteries have become inflexible (hard), then there would be an increase in the normal increase of pressure, when the heart pushes a new pulse of blood into the arteries. This would account for increasing the differential: systolic (the higher) minus the diastolic. (This is not from Dr. McDougall, it's just obvious. Flexible arteries can expand to absorb the pulses.)

The medical establishment has called high blood pressure idiopathic, which means we have no idea what causes it. Dr. Klaper has the appropriate comment:
"Nonsense! It's the food!"

It may seem nonsensical to call high blood pressure idiopathic, in view of the comments above.
Whenever things don't seem to make sense, the standard clue is "follow the money".