An implanted defibrillator may give heart arrhythmia patients peace of mind when it comes to their physical well-being. Keeping an eye on their emotional well being, however, is just as important.

You may be aware of the short-term risks associated with heart arrhythmias. However, atrial fibrillation, a common type of abnormal heartbeat, also appears to come with added risks later in life.

Irregular heartbeat isn't usually life-threatening. It is relatively easy to manage. However, those with the disorder may be at a heightened risk for developing dementia, including Alzheimer's disease.

Cigarette smokers may be ready to kick their habit, but a popular smoking cessation drug may only add health risks. A new study indicates that Chantix (varenicline) may come with a heightened risk of serious heart problems.

A meta-analysis of 14 studies has led researchers to believe that even moderate alcohol consumption can contribute to atrial fibrillation, or irregular heart beat.