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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.
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Never-before-seen cells unveiled in detailed map of developing human heartThe most comprehensive cell "atlas" of the developing human heart to date was crafted using cutting-edge technology and includes never-before-seen cell types.
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Extreme exercise can pose risks. A cardiologist explains why.Moderate exercise is good for the heart, but high levels of exercise can cause a phenomenon known as "athletic heart," which comes with risks.
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Scientists developing new 'heart-on-a-chip'So-called heart-on-a-chip systems may enable scientists to evaluate the safety and efficacy of new drugs more accurately than they can with animal tests.
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What's the rarest blood type?Blood typing is particularly important for blood transfusions.
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'Ice printing' tiny sculptures could help scientists engineer blood vesselsA technique for printing 3D structures from ice could be used to help make artificial veins and arteries.
