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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?
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Paramedics may not all be using the best method for defibrillation, study hintsPositioning defibrillator pads on the front and back of the body, rather than on the front and side, could be more effective at treating cardiac arrests, new research suggests.
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Heart attacks fell dramatically during the pandemic — and they're still droppingBetter prevention is driving down heart-attack rates in the U.S., but the sharp drops seen at the height of the pandemic were likely caused by people avoiding medical care.
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What causes blood clots?Blood clots can be dangerous, especially if all or part of them break off and then travel through the bloodstream.
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Anxiety and depression raise the risk of dangerous blood clots, study findsRecent research has drawn a link between anxiety, depression and an increased risk of deep vein thrombosis.
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Cholesterol-gobbling gut bacteria could protect against heart diseaseCertain microbes in the gut microbiome may guard against heart disease by lowering people's cholesterol.
