Most of the brain-related studies in this field have focused on those with moderate to severe Covid.
“It is brain damage, but it is possible that it is reversible,” she said.
They were invited back for a second brain scan, which they received an average of about five months after contracting the coronavirus.
Covid was apparently mild in the vast majority of these participants; only 15 of them were hospitalized with the disease.
Gray matter, which appears gray on certain brain scans, is comprised of various cells, including neurons.
The overall brain volume in people with Covid declined by an extra 0.3 percent over those without the disease.
The disease has proved maddeningly variable from patient to patient, and other studies have identified various means by which severe Covid in particular might damage the brain. »