Blood pressure is decided both by the quantity of blood your heart pumps and therefore the amount of resistance to blood flow in your arteries. The more blood your heart pumps and therefore the narrower your arteries, the upper your BP. You can have high BP (hypertension) for years with none symptoms. Even without symptoms, damage to blood vessels and your heart continues and may be detected. Uncontrolled high vital sign increases your risk of great health problems, including attack and stroke. High BP generally develops over a few years , and it affects nearly everyone eventually. Fortunately, high BP are often easily detected. And once you recognize you've got high BP, you'll work together with your doctor to regulate it.