Defines heart disease, how the heart works, and explains various types of heart diseases. Several causes of heart diseases are described, as well as ways to lead a heart-healthy lifestyle. Discusses how doctors diagnose and treat heart disease, and descr
Susan R. Gregson has been writing for more than 22 years. She is the author of nearly 20 children's books. She also writes magazine and Internet articles, speeches, and technical reports. Her favorite part of writing books is the research.