Abstract
Despite very effective antihypertensive therapies and data from clinical trials demonstrating that lowering blood pressure reduces cardiovascular and renal complications, more than one fourth of the estimated 42 million people with hypertension in the United States remain unaware that they have the disorder, and approximately three fourths of those with known hypertension have blood pressure that exceeds recommended levels.1 The problem is even greater in the rest of the world, where more than 800 million people, or more than 20 percent of the adult population, are considered to have hypertension and where rates of control are even worse than in . . .