This article is from the Big Folks Health FAQ, by email@example.com (Sharon Curtis) with numerous contributions by others.
Having high blood pressure is not a disease in itself, but a condition
that is a risk factor for such diseases as strokes and heart attacks.
Obese people are more likely to get high blood pressure. However obesity
does not exacerbate high blood pressue (if you were going to have high
blood pressure anyway, being fat isn't making it worse). And in fact
a fat person with high blood pressure is less likely to get a stroke
or heart attack than a thin person with high blood pressure.
High blood pressure can be easily controlled by taking medication.