What Should Your Blood Pressure Be?

According to WebMD, any systolic blood pressure between 120 and 139 is considered to be prehypertensive. A diastolic number between 80 and 89 also indicates prehypertension. Hypertension, or high blood pressure, is indicated when the systolic number is greater than 140, and the diastolic number is greater than 90. Patients with blood pressure problems typically reduce it through lifestyle changes and medication.