Study: COVID-19 increases risk of Alzheimer's and Parkinson's
Miscellaneous / / June 27, 2022
It also increases the risk of cerebral hemorrhage and the development of ischemic stroke.
New studyCOVID-19 positive patients at higher risk of developing neurodegenerative disorders, new study shows, presented at the Congress of the European Academy of Neurology in Vienna, revealed an increased risk of certain neurological disorders in patients who have had COVID-19.
In particular, those who recovered were 3.5 times more likely to be diagnosed with Alzheimer's disease and 2.6 times more likely to be diagnosed with Parkinson's disease. In addition, they were 4.8 times more likely to have cerebral hemorrhage and 2.7 times more likely to develop ischemic stroke.
This data comes from an analysis of the electronic health records of almost half of the total Danish population between 2020 and 2021.
Pardis Zarifkar from Copenhagen University Hospital notesthat due to the huge prevalence of COVID-19 in the coming years, the baseline rates of neurodegenerative diseases may increase worldwide.
The doctor added that with the exception of ischemic stroke, most neurological disorders after COVID-19 do not appear to be more common than after
influenza or community-acquired bacterial pneumonia.For many years, the best-known hypothesis explaining the link between viral infections and neurodegeneration is was that inflammation caused by infection can either initiate or accelerate the development of neurological diseases. In the review articleViral and Inflammatory Triggers of Neurodegenerative Diseases, published back in 2012, suggested that repeated viral infections could trigger a "cascade of events" typically seen in the earliest stages of neurodegeneration.
Sarah Imarcio of the charity Alzheimer's Research UK added that neurological diseases, causing dementia are caused by a combination of factors, from genetic predisposition to age and conditions environment. Therefore, COVID-19 potentially plays a small role in an individual's overall risk of developing these diseases.
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