My dia has been a little high around 85 to 90 but sys is 126 i just started dieting and exercising will it help bring it down since i'm only 22?

? Accuracy Readings: Study question: https://www.Healthtap.Com/#user_questions/1275967. Any time sitting, resting diastolic is <40 mmhg below systolic, i would question the accuracy of one or both readings (inaccuracy very common). This difference, pp, is determined by stroke volume vs. Volume ; elasticity of the major arteries, assuming no aortic valve leak. The only one of these which change rapidly is stroke volume.