One possible explanation would be glymphatic system dysfunction (failure to clear “junk” during sleep): https://pubmed.ncbi.nlm.nih.gov/34025481/ https://pubmed

One possible explanation would be glymphatic system dysfunction (failure to clear “junk” during sleep): https://pubmed.ncbi.nlm.nih.gov/34025481/ https://pubmed.ncbi.nlm.nih.gov/34025481/ Pure speculation of course, but it seems possible that low quality sleep would impair this system.