Link to Original Source
This article suggests that the underlying principle underlying both, is the same (clogging of arteries). Which for me as a med-student is pretty damn cool to read, since the hypertension-CVA connection is pretty poorly understood.
P.S. Artherosclerosis is caused by white bloodcells being absorbed into the blood wall and consequently absorbing cholesterol (thereby getting trapped). So it's actually very similar.
One of the chief duties of the mathematician in acting as an advisor... is to discourage... from expecting too much from mathematics. -- N. Wiener