After a stroke left Howard Blatt unable to speak, he helped create a support group for other people with aphasia, a brain condition that impairs communication. He recently died at age 88.

The popular weight-loss drug can now be used to reduce the risk of stroke, heart attacks and other serious cardiovascular problems in patients who are overweight or who have obesity, the FDA said.

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.