Since worry can increase your blood pressure, it's counterproductive to fret about the alarming headlines declaring that hypertension now affects half of all Americans, including about 80 percent of those over 65. The numbers don't reflect a sudden decline in the public's health; instead, health authorities have expanded the definition of hypertension so it now includes some 30 million more people. And yet despite this dramatic shift, surprisingly little has changed in the scientific understanding of hypertension, or in what your doctor is likely to recommend.
The news, announced recently, was that the American Heart Association and the American College of Cardiology have just lowered the bar for high systolic blood pressure (which is the top number). It used to be 140, and now it's 130. While The New York Times announced that now tens of millions of Americans will "need" to lower their blood pressure, the health police are unlikely to arrest you for a reading of 131. A better phrasing might have been that tens of millions more people might benefit from lowering their blood pressure — but many of those people already knew that.
For most people in that newly diagnosed range, which used to be called pre-hypertension, the recommendation is not necessarily to take drugs, but to try lifestyle changes, such as exercising and eating less junk food — the same stuff doctors have been nagging people about for decades. These changes can have positive effects across the board. For some people who already lead a healthy lifestyle, it's still acceptable for doctors simply to keep an eye on things.