The human heart is a vital organ that pumps blood through the body. You probably don't even think about it, but your heart is always working — it beats about 100,000 times a day, which adds up to about 3 billion beats over an average lifetime. Here's the latest science news about your ticker.
Latest about Heart & Circulation
What is a heart murmur?
Heart murmurs are extra, unusual sounds heard during a heartbeat — but why do they happen?
Why do you get dizzy if you stand up too fast?
It's normal for you to occasionally get dizzy and for your vision to go dark when you stand up, but it can sometimes be a sign of a chronic health condition.
Why are some people's veins 'hard to find'?
From stress to dehydration, there are many reasons why some people's veins may be "hard to find" when they're getting an infusion or blood draw.
Fast-spinning ride at county fair triggers stroke in a young woman in unusual case
Only 20 cases of stroke caused by being on an amusement park ride have been reported worldwide.
Fluid leaked from scuba diver's blood vessels after 100-foot cave dive in rare medical case
This extreme form of inflammatory response due to diving has rarely been reported worldwide, an attending doctor said.
Scientists may have found the missing link between heart disease and sleep problems
A new study suggests sleep problems often experienced by people with heart disease may be caused by damage to a group of nerves that regulate both the heart and the brain.
'Reanimated' hearts can be successfully transplanted and could expand donor pool
A gold-standard clinical trial suggests that "reanimating" donated hearts is a viable strategy for expanding the pool of potential heart donors.
In rare case, man develops painful deep vein blood clots following brown recluse spider bite
A man in Michigan developed deep vein thrombosis after reportedly being bitten by a brown recluse spider.
