Brain fog: New study examines causes of this long-COVID symptom

Neuropsychiatric symptoms of long COVID, including brain fog, inability to concentrate, and headache, have puzzled researchers and clinicians, who are hunting for those symptoms’ causes. A new study found that neuroinflammation and blood-brain-barrier dysfunction are not likely drivers of the symptoms, giving researchers more clues in their quest to uncover what actually may be the culprit.

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