Scientists have long had a general understanding of the cardiac conduction system, the complex electrical system in charge of muscle contractions within the heart.

Following a heart attack, scar tissue comprised of cells called fibroblasts accumulates. Since the heart muscle can't easily regenerate, the patient is at an increased risk of heart failure.

The ability to predict and prevent heart attacks is considered the holy grail in cardiology. Scientists may not be there yet, but they've taken another bold step toward prediction in a new clinical trial.

A long-term study of older adults has revealed that extended exposure to fine particle air pollution may result in an increased risk of hospitalization for heart and lung disease or diabetes.

Men who drink moderately before or after experiencing a heart attack appear more likely to survive. Heavy drinkers do not receive the added heart benefit.

Dick Clark, a legendary television producer famous for hosting "American Bandstand" and "New Year's Rockin ' Eve," died today of a massive heart attack. He was 82.

Though they share common risk factors, gum disease does not appear to cause heart disease or stroke. A new statement also reveals that treating gum disease is not proven to prevent stroke or plaque build up in the heart.

An Indian spice popular in curry appears to offer the heart a protective benefit following coronary artery bypass grafting. New research suggests turmeric may help prevent heart attacks after the operation.

An experimental implantable medical device could help heart patients seek treatment sooner by warning them if they suffer a suspected heart attack.

The U.S. Food and Drug Administration (FDA) issued a safety warning for birth control pills containing drospirenone . Birth control containing this synthetic hormone may put women at increased risk for blood clots.