Answer: When your blood pressure is high it puts stress on your heart, lungs, brain, kidneys, and blood vessels. Over time, this condition can damage these organs and tissues. In fact, high blood pressure is a leading cause of life-threatening conditions such as stroke, heart attack, and kidney failure. High blood pressure is often referred to as the silent killer because people often don’t have symptoms. That’s why it is important to have your blood pressure checked regularly. High blood pressure is often diagnosed during a doctor’s visit.