Health CNN Wire

How to safely exercise outdoors when it's hot out

There is nothing quite like an alfresco workout, with its fresh air and changing scenery. But when temperatures soar, beware.Exercising in hot weather stresses your body, especially if the humidity is high. If you do not take proper precautions, it…

Coronavirus variants: Here's what we know

The Delta variant of coronavirus is now the dominant lineage in the US, parts of Europe and elsewhere.Also known as B.1.617.2, it is clearly more transmissible, but it is unclear if it causes more severe disease.It's taken over from the…

FDA narrows prescribing information for Alzheimer's disease drug

The US Food and Drug Administration has narrowed the group of Alzheimer's disease patients who should receive the controversial drug aducanumab, sold as Aduhelm.The FDA approved changing the drug's label to clarify that the treatment is intended specifically for patients…