In a new study, researchers found that systolic blood pressure above 120 mmHg increases the risk of heart disease.
Blood pressure is the force manifested by circulating blood against the walls of the body’s arteries, the major blood vessels in the body. Hypertension is when blood pressure is too high.
Blood pressure is written as two numbers. The first (systolic) number represents the pressure in blood vessels when the heart contracts or beats.
The second (diastolic) number represents the pressure in the vessels when the heart rests between beats.
Worldwide, high blood pressure is a common and strong risk factor for the development of cardiovascular disease.
The 2017 American College of Cardiology (ACC)/American Heart Association (AHA) BP guideline defined blood pressure >130/80 mm Hg as hypertension.
This guideline showed that the normal level is less than 120/80 mm Hg and SBP 120-129 mm Hg and DBP<80 mm Hg is elevated BP.
However, little is known regarding whether elevated BP versus normal BP is specifically associated with a higher risk for coronary artery disease.
In the study, the team examined 805,992 people enrolled with a health insurance provider for company employees and their dependents in Japan.
They compared the incidence of coronary artery disease according to their blood pressure.
They found systolic blood pressure above 120 mmHg increases rate of heart disease.
Furthermore, the investigators repeated similar analyses using the diastolic blood pressure and reported that the coronary artery disease and heart disease risk concurrently increased with higher DBP categories.
The findings suggested even if blood pressure levels are slightly higher than normal level, it is essential to engage in lifestyle improvement, including salt reduction, from an early stage.
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The study is published in Diabetes Care. One author of the study is Dr. Mayuko Harada Yamada.
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