The human heart is a vital organ which pumps blood around the body via our veins, capillaries and arteries. On average, the heart beats an impressive 2.85 billion times in a person's lifetime, continuously supplying our cells and tissues with nutrients and removing waste products from them. Explore a diverse range of articles on the heart and circulatory system in our latest news coverage below, including answers to questions such as what causes blood clots, the rarest blood type and why women are more likely to die from heart disease than men.
Discover more about the heart and circulation
—The human heart: Facts about the body's hardest-working muscle
—How many times does a heart beat in a day? What about in a lifetime?
Latest about Heart & Circulation
Heart attacks are less harmful at night. And that might be key to treating them.
Controlling immune cells' internal clocks helped reduce inflammatory damage in conditions like heart attack and sickle cell disease, a mouse study found.
Heart quiz: What do you know about the body's hardest-working muscle?
Get pumped up — it's time to show off your knowledge about the heart.
Gum disease treatment slows the thickening of arteries, clinical trial shows
New trial results show that intense gum disease treatment reduces how much the carotid artery narrows in otherwise healthy individuals. This suggests oral health should be taken seriously as a contributing factor in cardiovascular disease.
The human heart: Facts about the body's hardest-working muscle
Discover interesting facts about the fist-size organ that powers the circulatory system.
A rare genetic disease stained a woman's heart black
An older woman had a relatively common heart problem, but it had a very rare cause.
How do fitness trackers measure your heart rate?
Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.
'Breakthrough' stem-cell patches stabilized woman's heart as she awaited transplant
A woman with heart failure was kept alive long enough to receive a heart transplant, in part thanks to newly developed stem-cell-derived heart tissue grafts.
Diagnostic dilemma: A woman got 'broken heart syndrome' after eating too much wasabi
The patient was diagnosed with takotsubo cardiomyopathy, also known as "broken heart syndrome," which had an unusual cause.
