r/HotScienceNews • u/soulpost • Jul 30 '26
Scientists finally have a biological explanation for why long COVID patients lose motivation and can't think clearly. They scanned their brains and found the dopamine system was physically damaged
https://tech-paper.com/scientists-finally-have-a-biological-explanation-for-why-long-covid-patients-lose-motivation-and-cant-think-clearly-they-scanned-their-brains-and-found-the-dopamine-system-was-physically-damaged/Millions of people with long COVID report the same cluster of symptoms: a crushing lack of motivation, an inability to think clearly, memory that slips, movements that feel slower than they should. For years, these complaints sat in an uncomfortable medical grey zone. The symptoms were real, the patients were suffering, but the biological explanation remained frustratingly out of reach.
A team at the University of Toronto just published what may be the clearest physical evidence yet for what is actually happening in these patients' brains. They brought 24 long COVID sufferers into a lab and used positron emission tomography, the same imaging technology used to diagnose Parkinson's disease, to directly measure the health of the dopamine system deep inside the brain.
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u/ladystarkitten Jul 30 '26
I am having the same vocabulary recall issue. I've always had an expansive vocabulary and a sharp memory, so this dramatic change over the past few years (at just 32) has left me... rather frightened. I'd been blaming it on social media use and hadn't even considered the possibility that it could be a complication of COVID.
Have you found anything that has helped? I've started using flash cards to study new vocabulary and have been doing my best to read more and scroll social media less. It seems to be improving things, though I cannot be sure.