A new study finds that 5.5 million adults worldwide died in 2019 from cardiovascular disease attributable to lead exposure, more than six times higher than a previous estimate.
More than a 100 years ago, doctors thought that too much running or other vigorous activity could harm us. Marathoner Clarence DeMar proved them wrong.
After recovering from their initial illness, COVID-19 patients can sometimes suffer serious complications such as heart attacks and strokes — even up to a year later. New research quantifies the risk.
COVID-19 can cause symptoms that go well beyond the lungs, from strokes to organ failure. To explain these widespread injuries, researchers are studying how the virus affects the vascular system.