What Are the Normal Diastolic and Systolic Blood Pressures?

Human blood pressure must be maintained within a certain range to ensure adequate blood supply to the body’s tissues and organs and to maintain overall health. The normal diastolic blood pressure range is 60–90 mmHg, and the normal systolic blood pressure range is 90–140 mmHg. Blood pressure is considered normal as long as it remains within these ranges. To prevent hypertension, it is essential to adopt a healthy lifestyle: engage in regular physical activity and follow a low-salt, low-fat diet.