By Gloria Gardner The leading cause of death for both men and women in the United States are heart attacks. It is also the main reason for emergency treatment at Lee's Summit hospitals. There is a misconception that these happen to senior citizens only, but available data refutes that. Even though they kill so many people, these are largely preventable. Heart disease refers to any abnormality in its function. The most common of these is narrowing or blockage of coronary arteries. Others include abnormal heart rhythms, heart failure and heart...