High blood pressure is a serious medical condition. It could lead to problems such as heart disease, a stroke, or kidney diseases. Every time the heart beats, it pumps blood under pressure to the rest of the body through the arteries. A person needs pressure to keep the blood moving, but if it’s consistently too high, it puts extra strain on the heart and blood vessels. Other parts of the body, such as the brain and the kidneys may also be affected by high blood pressure.