High Blood pressure like a stroke and heart disease is called the silent killer. High blood pressure will silently lead to heart disease and or a stroke. High blood pressure pertains to the pressure of blood moving in the arteries and the work the heart has to do the pump that blood. When the arteries are clear the heart work less. A silent buildup of the plaque in the arteries means less blood flows, which means more pressure and more work for the heart. Blood pressure monitoring is important.