Covid-19: Alzheimer’s, Parkinson’s… contaminated people would be more at risk of developing neurodegenerative disorders, according to a Danish study

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According to a recent Danish study, people who have been positive for Covid-19 are more likely to be diagnosed with Alzheimer’s or Parkinson’s, or to have an ischemic stroke.

New cases of Covid-19 contamination have started to rise again in France since the beginning of June, in particular because of the sub-variants of Omicron BA.4 and BA.5, now the majority in France.

A Danish study was presented at the end of June at the European Academy of Neurology 2022 congress. According to it, patients positive for Covid-19 would have a higher risk of developing neurodegenerative disorders than people who tested negative. .

The study, report our colleagues from the Independent, was based on more than 900,000 people tested for Covid-19. According to the researchers, the 43,375 who tested positive would have a 3.5 times higher risk of being diagnosed with Alzheimer’s, 2.6 times of being diagnosed with Parkinson’s, 2.7 times of being affected by an ischemic stroke (with an blocked blood) and 4.8 times more likely to suffer from an intracerebral hemorrhage (bleeding in the brain).

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A link, between a higher risk of a diagnosis of neurodegenerative disorders in patients positive for Covid-19 compared to negative patients, which should be “confirmed or invalidated by a large register of studies in the near future”, has explained, in a press release, doctor Pardis Zarifkar of the department of neurology at the Righospitalet in Copenhagen. Results which, according to him, “will help to better understand the long-term effect of Covid-19 on the body and the role that infections play in neurodegenerative diseases and strokes.”

Results also to be temporized. The increase in these risks already exists with other respiratory illnesses or the flu. Only the risk of ischemic stroke would be 1.7 times higher in Covid patients than in patients over 80 with influenza or bacterial pneumonia.

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