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Loss of IQ from Covid
‘Brain fog’ from long Covid has measurable impact, study suggests
“Researchers found that deficits equivalent to six IQ points were detectable a year or more after infection”
A groundbreaking study aims to determine if long COVID-19 could lead to another type of dementia
“‘…there is evidence of fragments or an inflammatory kind of a massive inflammatory response that occurs triggered by COVID. And those inflammatory markers we tend to notice in the brain.’
And that could cause something called COVID-19 Cognitive Impairment.
‘And we are going to compare people with COVID cognitive impairment. To be clear on this, I think that COVID can cause cognitive impairment and maybe even dementia…’”
Prevalence and co-occurrence of cognitive impairment in children and young people up to 12-months post infection with SARS-CoV-2 (Omicron variant) - PubMed
Prevalence and co-occurrence of cognitive impairment in children and young people up to 12-months post infection with SARS-CoV-2
COVID-related loss of smell tied to changes in the brain | CIDRAP
“On MRI conducted during the game, loss of smell was associated with decreased functional activity during decision-making, loss of white-matter integrity, and thinning of the outer layer of the cerebrum in the parietal regions (responsible for processing sensory input, understanding spatial relationships, and how to navigate).”
Brain effects of mild COVID-19 in healthy young adults: A pilot study
“Our pilot data suggests that mild COVID-19 may result in brain pathology and impact neurocognitive function in younger adults in a manner parallel to prior findings in older individuals. Though findings may not generalize to other SARS-CoV-2 variants, larger longitudinal studies of mild COVID-19 should be undertaken to understand the potential clinical implications of these findings over the longer term.”
Our pilot data suggests that mild COVID-19 may result in brain pathology and impact neurocognitive function in younger adults in a manner parallel to prior findings in older individuals. Though findings may not generalize to other SARS-CoV-2 variants, larger longitudinal studies of mild COVID-19 should be undertaken to understand the potential clinical implications of these findings over the longer term.
Study uncovers the basis of COVID-19-related brain fog | University of Minnesota
EXTREME and incomplete oversimplification of the many complex neurological issues caused by SarsCov2, but important facet of the vaguely defined “brain fog” of Long Covid and post-acute Covid lingering symptoms.
“Neurological symptoms have been widely observed in COVID-19 patients, with many survivors exhibiting persistent neurological and cognitive impairment. New research from the University of Minnesota found that COVID-19 triggers inflammation in the brain, which is linked to many COVID-related symptoms such as fatigue and ‘brain fog.’”
Patients recovering from COVID-19 who presented with anosmia during their acute episode have behavioral, functional, and structural brain alterations
: “Patients who presented with anosmia exhibited more IMPULSIVE alternative changes…Anosmia correlated with brain measures, including decreased functional activity during the decision-making task, thinning of cortical thickness in parietal regions, and loss of white matter integrity.”
Patients recovering from COVID-19 who presented with anosmia during their acute episode have behavioral, functional, and structural brain alterations
“Patients recovering from COVID-19 who presented with anosmia during their acute episode have behavioral, functional, and structural brain alterations”
The risk of cognitive decline and dementia in older adults diagnosed with COVID-19: A systematic review and meta-analysis.
new paper: risk of cognitive decline and #dementia in older adults diagnosed with #COVID.
Cognition and Memory after Covid-19 in a Large Community Sample | NEJM
Cognition and Memory after Covid-19 in a Large Community Sample
Cognition and Memory after Covid-19 in a Large Community Sample
Dutch Survey Data Shows Significant Increase In Memory And Concentration Problems Among Adults Since Start Of Covid-19 Pandemic
"Dutch Survey Data Shows Significant Increase In Memory And Concentration Problems Among Adults Since Start Of Covid-19 Pandemic"
Study: COVID-19 Can Accelerate Brain Aging, Lead to Irreversible Neurological Conditions
“Tiny leakages of blood in crucial brain regions of patients infected with Covid-19 can accelerate brain aging and lead to irreversible neurodegenerative conditions, according to a Houston Methodist review study.”
COVID-19 could put us at a greater risk of neurodegenerative diseases and stroke
"Analysis of nearly one million Danish health records has found patients who tested positive for COVID-19 were subsequently more likely to be diagnosed with Alzheimer’s disease, Parkinson’s disease and stroke."
Cognitive impairment in young adults with post COVID-19 syndrome
Covid cognitive impairment in young adults: concentration difficulties (87.85%), anomia/word-finding difficulties in speech (86.44%), processing speed/remembering recent events (76.16%), multitasking (75.23%) reading aloud/reading comprehension (69.62%).
Cerebral hypoperfusion in post-COVID-19 cognitively impaired subjects revealed by arterial spin labeling MRI
Study examining patients at a long COVID neurology clinic showing deficits in executive, attention, language and memory functions. MRIs showed reduced blood flow to frontal, parietal and temporal regions of the brain compared to age & sex matched controls
Tatiana Prowell, MD on Twitter
A study from #Brazil finds 1 in 4 adults who had mild #COVID19 demonstrated cognitive deficits. The average age of study participants was 38. See what happened when they were asked to copy a diagram. We are not prepared for this.
The effects of COVID-19 on cognitive performance in a community-based cohort: A COVID Symptom Study Biobank observational study
"Cognitive deficits following SARS-CoV-2 infection were detectable nearly two years post infection, and largest for individuals with longer symptom durations, ongoing symptoms, and/or more severe infection."
Symptomatic COVID-19 is associated with deficits in task-related cognitive function and psychiatric symptoms
"Symptomatic COVID-19 is associated with deficits in task-related cognitive function and psychiatric symptoms"
After Severe COVID, Cognitive Trajectories Go One of Three Ways
"After Severe COVID, Cognitive Trajectories Go One of Three Ways
— Cognitive impairment persisted for 1 year in some patients age 50 and older"
Symptomatic COVID-19 is associated with deficits in task-related cognitive function and psychiatric symptoms
"The results indicated that symptomatic COVID-19 was associated with the lower performance of cognitive tasks involving decision-making and executive function, with low scores in delay discounting and Flanker test scores, respectively."
Previous COVID infection linked to lower brain oxygen levels, cognitive problems: study
Canadian study: participants who previously had COVID-19 performed worse on 2 specific cognitive tasks, and brain imaging showed that during these tasks, there was a lack of oxygen reaching sections of the brain that would normally be fully engaged.
Long COVID Linked to Lower Brain Oxygen Levels, Cognitive Problems and Psychiatric Symptoms - Neuroscience News
"Long COVID is linked to reduced oxygen uptake in the brain, a new study reports...finding is significant as a lack of sufficient oxygen supply may be one of the mechanisms that cause brain fog, cognitive problems...depression and anxiety"
What we now know about long COVID and our brains
"Of more than 665 million cases worldwide, nearly 1 in every 2 people with COVID-19 is at risk of developing Post-COVID-19 Neurological Syndrome (PCNS).. PCNS mimic some of the symptoms after a stroke and younger adults seem to be at particular risk."
MRI Reveals Significant Brain Abnormalities Post-COVID - Neuroscience News
"Neuroimaging study reveals significant brain changes in areas associated with language comprehension, cognition, and circadian rhythm control six months after COVID-19 infection."
Daniel Brittain Dugger on Twitter
It ain't brain fog. It is SARS-Cov-2 Associated Neurocognitive Decline (SAND) and we are not moving fast enough.
Long Covid changes the human brain. We may finally know how
"Long Covid changes the human brain. We may finally know how
Lost connections between nerve cells in the brain may explain cognitive symptoms such as brain fog and memory lapses."
Study explores COVID-19 effects on cognition
"The study also found that the degree of cognitive impairment was not related to the amount of time that had elapsed between COVID-19 infection and the assessment, suggesting that they might be long-lasting."
COVID increases risk of 44 different neuro disorders, including Alzheimer's, 1 year post-infection
"COVID increases risk of 44 different neuro disorders, including Alzheimer's, 1 year post-infection"
Brain fog trouble finding words long covid and cognitive decline
“There are many people who are complaining about brain fog, limited attention, limited concentration, difficulty with word finding, so there are a lot of soft signs of some type of neurological events going on,”