Some modern physicians thought that healthy blood pressure reading is 120/80 mmHg regardless of any consideration for age. The study SPRINT (Systolic Blood Pressure Intervention Trial) found that when systolic blood pressure was lowered to below 120 mmHg, there was a 27 % reduction in mortality from all causes compared to below 140 mmHg. We came to know through medical studies that there is a thumb rule for the systolic number is 100 plus your age for men (100 plus age minus 10 for female). The blood pressure chart on this page provides blood pressure related to age. Naturally, aging loses the elasticity of the arteries.