AI Summary

Scientists conducting a preliminary study in Canada examined brain scans of 24 individuals suffering from long COVID and identified distinct changes in certain brain regions that were not present in age‑matched healthy participants. The alterations appear to involve injury to dopamine‑related neurons, a finding that could relate to some of the most debilitating symptoms reported by long‑COVID patients. The research is early‑stage, and the authors note that the observed changes are a hypothesis‑generating observation rather than a confirmed mechanism. Further investigation is needed to determine whether these neural changes directly cause specific long‑COVID effects.

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