Japanese researchers find AMPA receptor surge causes brain fog in long COVID

Japanese researchers have identified a key factor behind "brain fog" in long COVID patients. They discovered an increase in AMPA receptors in the brains of affected individuals. This surge in AMPA receptors, which are crucial for memory and learning, disrupts cognitive processes. The severity of brain fog symptoms directly correlates with the extent of this receptor increase. The findings offer hope for new treatments targeting these receptors and improved diagnostic methods. This research validates long COVID as a distinct medical condition.