The "brain fog" of long COVID might be due to impaired lung function following a person's infection, a new study says.

The brain "fog" often reported by people with long Covid may be linked to lung function, according to a recent study. Scientists have discovered a potential connection between diminished pulmonary gas exchange and the concentration difficulties experienced by individuals dealing with long-term coronavirus effects.

Lower rates of gas exchange in the lungs may contribute to impaired cognitive function ("brain fog") tied to long COVID, according to a small study to be presented at next week's Radiological Society of North America's (RSNA's) annual meeting in Chicago.

In patients with long COVID, lower pulmonary gas exchange may be associated with impaired cognitive function, according to a study presented at the annual meeting of the Radiological Society of North America (RSNA).