ME Research UK: Orexin is a chemical messenger produced in the brain. Disruptions in the orexin system produce symptoms that overlap with long COVID and ME/CFS. A review discusses whether it is feasible that disruptions relating to orexin could be linked to long COVID. https://tinyurl.com/5b34px25 #mecfs #longcovid @mecfs@fedigroups.social @longcovid@fedigroups.social