News Health & Medicine

Long COVID brain fog may be due to damaged blood vessels in the brain

The result suggests there is a biological basis for this symptom

A foggy image of a woman with long, dark hair swept to the left.

Brain fog is a debilitating symptom commonly reported by people with long COVID. Now, scientists have linked the symptom to leaky boundaries in the brain.

baona/iStock/Getty Images Plus

By Meghan Rosen

Leakiness in the brain could explain the memory and concentration problems linked to long COVID.