Why should I have these screenings done if I have no symptoms?

Why should I have these screenings done if I have no symptoms?

Many people are at risk for diseases such as stroke and heart disease but experience no symptoms. Early detection and control can prevent major consequences down the road. For example, a transient ischemic attack (TIA) is a major warning sign for a full-blown stroke, but only about 15-20% of people who have a stroke have a warning TIA. (Source: American Heart Association)