Researchers tested undergrads while measuring brain blood flows. Their brain scans looked like people in their 60s: previously infected students exhibited distinct prefrontal haemodynamic patterns during cognitive engagement, reminiscent of those observed in adults four decades older, and this appeared to be especially true if they reported experiencing brain fog due to COVID-19. Over a third of them showed objective cognitive impairment: 37.33 % of participants who reported previously having COVID-19 displayed objective cognitive impairment [...] (assessed via computerised testing), And neuron death is irreversible: This may indicate microglial hyperactivation, theoretically driven by elevated oxidative stress from dysfunctional mitochondria—a possible contributor to cell death and cognitive impairment https://www.sciencedirect.com/science/article/pii/S0889159124007311 h/t @PatrickWirth@mstdn.ca #COVID #SARSCoV2 #LongCOVID #COVID19 #BrainFog #PASC