Many people are unaware what the blood pressure is. More importantly, the lack of knowledge could potentially occur a number of serious health complications, heart attack, stroke, and even death. Have you ever heard about the Silent Killer? If not, then you have come to the right place. Here, you would be going to know about the Silent Killer, what it is actually. This term is defined as the high blood pressure very well. Just with a little knowledge, high blood pressure can be prevented or reduced. You can take action so that the damage of the high blood pressure can be reduced.