How serious is cardiovascular disease?

AHA (American Heart Association) reports that cardiovascular disease is the number one cause of death globally, about one-third of the death toll. In fact, according to various studies, the situation could be improved. Most of the patients whom died of heart disease did not notice that they have heart diseases. Family and friends might be told that they felt dizzy, chest tightness, fatigue, and others symptoms that did not sound too serious, so unfortunately, it was ignored till the tragedy happen. Therefore, it is important to monitor your cardio health regularly even if you seem to be healthy enough.