According to new guidelines issued in May 2003 by the National Heart, Lung, and Blood Institute (NHLBI), you may be one of 45 million Americans (in addition to the 50 million who already have hypertension) who has prehypertension. Here is what you need to know:
What is hypertension?
Blood pressure is the force of blood against the artery walls. If it stays elevated over a period of time you ha...
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