It also increases the risk of Parkinson’s disease and stroke

Research initially recognized that a Covid-19 infection on Brain can influence. Previously known neurological consequences of Corona include, for example difficulty concentrating, “Clouded brain” and that too loss of brain mass. Now he has one Study from Denmark found that too risk of nerve diseases sharply increases due to a corona infection.

People who have tested positive for Corona also get sick higher risk of Alzheimer’s or Parkinson’s disease. Likewise, the danger increases, a so-called ischemic strokeas it were a heart attack in the brain, or to suffer a hemorrhage in the brain.

More than half of the Danish population examined – data compared with patients with influenza

For the study, the Health data of over half of the Danish population analyzed between February 2020 and November 2021. In total, more than 919,000 people were tested for the crown as part of the study, approximately 43,000 of them were positive. The researchers also looked at the data from sick with the flu from the corresponding period preceding the pandemic.

The results of the study were published on Saturday (June 25, 2022) on Congress of the European Academy of Neurology (EAN) presented in Vienna – and they are clear: anyone who has tested positive for the Crown has a 3.5 times the risk of developing Alzheimer’sand a 2.6-fold risk of Parkinson’s disease.

The probability of one the ischemic stroke rate was 2.7 times higher. This is the most common form of stroke. As a “Hirninfarkt” occurs when blood clots travel through the bloodstream to the brain and block the blood vessels there. The result: nerve cells that would otherwise be supplied by the affected vessel die. This can cause paralysis, for example. The risk after Corona Cerebral haemorrhage (intracerebral haemorrhage) according to the study, even lies 4.8 times higher.

Effects of Covid-19 on neurological diseases – still not fully understood

Pardis Zarifkar, lead author of the study from the Neurology Department of the Rigshospitalet in Copenhagen, explains in a note: “More than two years after the outbreak of the Covid-19 pandemic, the precise nature and evolution of the effects of Covid-19 on neurological diseases are not yet characterized”. Previous studies have found a connection with neurological syndromes, but it is not yet known “whether Covid-19 also has the Frequency of some neurological diseases affected and whether it differs from other respiratory infections “.

The Danish scientists also looked at the latter in more detail. A difference from influenza or other respiratory diseases could not be determined. The only risk of ischemic stroke is in Covid 19 patients 1.7 times higher, compared to patients with bacterial influenza or pneumonia. This difference was also found only in the over 80 age group.

The frequency of other neurodegenerative diseases such as multiple sclerosis, myasthenia gravis, Guillain-Barré syndrome and narcolepsy did not gain weight after Covid-19, flu or pneumonia.

Most neurological diseases are no longer common due to Corona

Zarifkar added: “These findings will improve our understanding of the long-term effects of Covid-19 on the body and the role infections play in neurodegenerative diseases and stroke. “However, the researcher finds it reassuring most of the neurological diseases caused by the corona are no longer common occur that from the flu. However, further studies are needed in the future in order to better assess the actual risk for Covid patients. In addition, it is not yet fully understood which processes in the body are responsible for the phenomenon after an infection.

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