Blood pressure is simply the amount of force exerted when blood pushes against the walls of the blood vessels. High blood pressure, or hypertension, places too much pressure on the vessel walls, making the heart work very hard to push blood through tighter arteries. Over time, high blood pressure weakens the heart and causes hardening of the artery walls, making them weak and susceptible to injury. Often, hypertension has no symptoms whatsoever, but this damage to the blood vessels or heart, may lead to stroke, heart failure, heart attack, kidney failure, and vision loss. This is why hypertension has the…