Someone may not have had high blood pressure last week, but you may have it this week. Even if your blood pressure hasn’t changed a smidge. Why? Because the rules shifted recently. It used to be that people were encouraged to adopt healthy behavior to keep their blood pressure down but didn’t label someone as having hypertension until systolic blood pressure (the top number) exceeded 140 millimeters of mercury and/or the diastolic blood pressure (the bottom number) exceeded 90 mm Hg. Now the American College of Cardiology and the American Heart Association have updated blood pressure guidelines that move the goal post for many people. For more information click here.