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The human heart: Facts about the body's hardest-working muscleDiscover interesting facts about the fist-size organ that powers the circulatory system.
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A rare genetic disease stained a woman's heart blackAn older woman had a relatively common heart problem, but it had a very rare cause.
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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.
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'Breakthrough' stem-cell patches stabilized woman's heart as she awaited transplantA 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.
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Diagnostic dilemma: A woman got 'broken heart syndrome' after eating too much wasabiThe patient was diagnosed with takotsubo cardiomyopathy, also known as "broken heart syndrome," which had an unusual cause.
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How many blood types are there?Red blood cells are complex — there's much more to blood types than A, B and O.
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Women are at higher risk of dying from heart disease. Here's why.Cardiovascular disease develops and presents differently in women and men. But medical guidelines are often based on studies that excluded women.
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'Wake-up call': Women are more likely than men to die of complications after heart surgeryComplications that arise after surgery are more likely to be underrecognized and undertreated in women than in men, leading to higher death rates, new research suggests. Why?
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How many times does a heart beat in a day? What about in a lifetime?Celine Dion sings that "my heart will go on," but how many times does it actually beat in a day or even a lifetime?
