Japanese researchers have identified a potential biological cause of Long COVID brain fog. Using PET brain imaging, they found increased AMPA receptor density throughout the brains of individuals experiencing cognitive impairment and inflammation associated with Long COVID. This finding supports the idea that brain fog is a biologically verifiable condition and provides new avenues for developing diagnostic tools and targeted therapies.
find the original post here https://www.sciencedaily.com/releases/2025/10/251006051127.htm
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