Researchers have discovered that microscopic structural changes in the aging heart may help prevent irregular heartbeats. The discovery challenges the idea that all age-related heart changes are ...

Your heart beats about 100,000 times a day. Sometimes it beats faster and sometimes more slowly, depending on what you're doing and whether, for instance, you're all worked up about something. So ...

Too much alcohol causes damage to your heart, even if you are young and fit, say the authors of a new study that adds yet another reason to keep drinking to a minimum. Arrhythmia, or an irregular ...

Bigeminy is an irregular heart rhythm where every normal beat is followed by an abnormal one. You should see a doctor if bigeminy causes dizziness, chest pain, or trouble breathing. Bigeminy can be ...

Many arrhythmias have no clear cause; these idiopathic cases arise without identifiable triggers, while for others, the causes may be congenital or acquired.

Researchers in Germany have found that people who watched a big football match at a stadium had an average heart rate of 94 beats per minute (bpm) compared with 79 bpm for those watching on television ...

VIENNA, Austria (AP) _ An irregular heart beat is more common among men but much more hazardous when it occurs in women, according to the first major study to examine gender differences in the ailment ...

Your heart has been doing its job faithfully for years, beating steadily in the background while you go about your daily life. Then suddenly, you become acutely aware of every beat as it seems to ...

A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...

Chest pain or palpitations can signal hidden heart trouble. Know when an ECG test is needed, what results show, and when to seek urgent care.

Question: I'd like to learn more about supraventricular tachycardia. I've been told a couple of different views on this and it's very unsettling. My condition scares me at times. On several occasions, ...

The heart is a muscle about the size of your fist that pumps blood around the body. When the heart is functioning properly, it has a specific rhythm controlled by a mass of specialized heart tissue ...