U.S. regulators approved Biogen Inc's aducanumab as the first treatment to attack a likely cause of Alzheimer's disease despite controversy over evidence.
Deaths from COVID-19 now exceed 1 million across the world, but scientists are still grappling to determine the virus' fatality rate.
Medical professionals in China and the U.S. agreed that ventilators are vitally important but highlighted the fear of using them early or too frequently.
Tighter blood pressure guidelines from U.S. heart organizations mean millions more people need to make lifestyle changes, or start taking medication, in order to avoid cardiovascular prob...