COVID-related loss of smell tied to changes in the brain University of Minnesota Twin CitiesLow cortisol may play a role in fueling long COVID, study suggests University of Colorado BoulderPatients recovering from COVID-19 who presented with anosmia during their acute episode have behavioral, functional, and structural brain alterations Nature.comCOVID linked to 65% of new onset cognitive impairment, dementia NewsNation NowIn COVID-19 patients, neurological symptoms last up to three years Northwestern Now