What is the normal blood pressure range for middle-aged adults?

The normal blood pressure range for middle-aged adults is defined as systolic pressure between 90–140 mmHg and diastolic pressure between 60–90 mmHg. A detailed analysis is as follows:

Blood pressure refers to the force exerted by circulating blood against the walls of blood vessels per unit area. It is one of the fundamental vital signs in the human body. Abnormal blood pressure may indicate symptoms caused by various physiological or pathological factors. Blood pressure is considered normal only when three separate measurements, taken at rest and without antihypertensive medication, all fall within the normal range. However, if three consecutive measurements consistently exceed the normal values, a diagnosis of hypertension should be considered. If blood pressure is elevated immediately after intense physical activity, coffee consumption, or due to emotional stress, this is classified as physiological (transient) hypertension, which does not require treatment and resolves spontaneously. In contrast, persistent high blood pressure may result from pathological conditions such as essential hypertension, glomerulonephritis, or renal artery stenosis, leading to pathological hypertension.

Once abnormal blood pressure is detected, a comprehensive medical evaluation should be conducted promptly to determine the underlying cause.