In-depth

Causes

Heart arrhythmias

A heart arrhythmia is an abnormal heart rhythm. Arrhythmias can be a byproduct of damage to the heart from disease or age.

Lifestyle and home remedies

Caffeine content

How much caffeine is in that latte or soda you're sipping?

Stress relief

Looking for more stress relievers? Find out why exercise is a good option to try.

Risk factors

Chewing tobacco

Chewing tobacco, snuff and other forms of smokeless tobacco are linked to many health problems, including cancer. Understand the risks and learn how to quit.

Tests and diagnosis

Electrocardiogram

An electrocardiogram (ECG or EKG) is a test that provides valuable clues about your heart health. Here's what you need to know about the test.

Stress test

A stress test is used to diagnose coronary artery disease and heart arrhythmias, as well as guide treatment of heart disorders.

May. 24, 2011