What is a normal blood pressure range?

A normal blood pressure range, according to WebMD, occurs when the systolic number is 120 or below and the diastolic number is 80 or below. High and low blood pressure problems affect both men and women.

High blood pressure occurs when the top number, the systolic number, is above 120 and the bottom number, the diastolic number, is above 90. Low blood pressure is called hypotension and occurs when blood pressure drops below 90 and 60. Risks associated with low blood pressure rise as a person ages. Adequate healthy food and exercise are key in keeping blood pressure under control, explains WebMD.