It is a very common myth that circulates to this day. Normally we have known that high blood pressure has always been defined as over 140/90 mm Hg. But over time this definition has changed. As medical science keeps evolving, someone with high blood pressure is generally someone who has a blood pressure over 130/80 mm Hg and also has a relatable history of cardiovascular disease. Even if they lack any history, people with high blood pressure are generally considered to be at very high risk for having a cardiovascular event.