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.
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A joyful wedding nearly broke a woman's heart in a rare case of 'happy heart syndrome'Diagnostic dilemma A 65-year-old woman arrived at the ER with textbook signs of a heart attack — but the real trigger turned out to be joy, not a blocked artery.
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The bacteria behind gum disease may also harm your heart valves, early research suggestsA bacterium linked to gum disease may contribute to heart valve disease by setting off inflammation that can lead to calcium buildup.
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New robotic heart mimics common, mysterious condition to help researchers study itA new robotic heart can recreate different stages of heart failure, potentially giving researchers a new way to test treatments before they reach patients.
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Heart issues tied to 'microdamage' in the brain might raise risk of memory loss, study hintsWhen the heart's pumping function gets weaker, areas of the brain linked to memory show early signs of damage, a study finds.
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These patients' hearts stopped a dozen times a day. An innovative procedure has transformed their lives.People with a rare condition experience "pauses" in their heart beat that cause them to faint. A new procedure could change their lives, research suggests.
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A new test could flag people at risk for anemia by filming their eyeballs — no needles requiredA new needle-free technology isn't ready to replace blood draws, but it could serve as a screening tool to flag people who need a full-blown blood test.
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Both very low and very high heart rates may be linked to higher stroke risk, study saysBoth unusually low and high resting heart rates may be linked to an increased stroke risk, though more research is needed to confirm a causal relationship.
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Rectal exam stabilized man's irregular heartbeatA man's sudden heart issue went away without the standard course of treatment.
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'Night owls' may have worse heart health — but why?Emerging evidence suggests that "night owls" are more likely to have poor heart health and a higher risk of heart attack or stroke than "morning larks." Why is that?
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