When it comes to protecting your heart, preventative testing is key. Keeping track of important metrics like blood pressure and cholesterol can help you understand your risk of cardiovascular disease.

Doctors use CT scans to determine how much calcium is in a person’s artery -- their coronary artery calcium score. The numbers are used to help determine a person’s risk of developing heart disease.

(InvestigateTV) — More than half of Americans don’t know heart disease is the leading cause of death in the United States, despite its century-long reign as the nation’s number one killer, according ...