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Will corona increase the risk of dementia in the future?

We already know that the effects of corona do not end with the exit from isolation, and we also know for sure that the virus affects not only the respiratory systems but also the brain.

So are we likely to see a wave of Alzheimer's after the plague?

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• Corona

• Corona virus

• Alzheimer's

• dementia

Walla!

health

Tuesday, 12 January 2021, 06:43

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Alzheimer's can start even decades before the onset of symptoms (one-minute sedation system)

After a year of living alongside the corona, we already know that the virus also affects the brain, and that its effect may remain long after recovery.

In light of this understanding, researchers examined a particularly large amount of research on COVID-19 and its effect on the brain, and came to an alarming conclusion: there is a pretty good chance that the corona virus will cause cognitive decline, dementia and Alzheimer’s in the years after recovery.

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Already in the first months of the epidemic, doctors reported a variety of neurological symptoms in COVID-19 patients, indicating that the virus affects the central nervous system.

Researchers have even discovered the virus in the brains of people who died from COVID-19.

Because corona is also known to have long-term effects, the question has arisen as to whether these effects on the brain may cause neurodegeneration and dementia in the future.

Or in other words: will there be a wave of Alzheimer's cases related to the corona epidemic in the coming years?

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In a new article published in the Journal of Alzheimer's and Dementia by the Alzheimer's Association, a team of dementia experts has made very convincing arguments that COVID-19 has long-term effects on the brain and therefore may cause dementia in some people.

Based on their initial findings, they are now launching a major international study to understand the long-term neurological effects of this relatively new disease.

How did they come to this alarming conclusion?

The article examined evidence of how COVID-19 affects the brain, as well as data from over 100 years on other viral infections, including SARS, MERS and the Spanish effect.

"Since the 1918 flu pandemic, many of the flu-like diseases have been linked to brain disorders," said Gabriel Arvskin, lead author and professor of neurology at the Center for Health Sciences at the University of Texas at San Antonio.

"The lesser-known medical history of these viruses in the last century indicates a strong link to brain diseases that impair memory and behavior," added Maria Carillo, co-author of research and chief scientific officer of the Alzheimer's Association.

Although the world has only known COVID-19 for a year, so there is little evidence for the long term, but there is good reason to believe that this virus may also affect memory.

SARS-CoV-2 is known to enter cells through receptors called ACE2, which are at the highest concentration in the olfactory bulb, the brain structure involved in the sense of smell, which may explain the common loss of odor.

This structure is also closely related to the hippocampus, a brain structure involved in short-term memory.

MRI scans of the brain of a young woman from Italy that show how the corona virus changed its brain structure and caused a loss of sense of smell (Photo: Official website, JAMA Neurology)

"Traces of the virus, when it invades the brain, lead almost directly to the hippocampus," Dr. Arvskin explained. "This is probably one of the sources of cognitive impairment observed in COVID-19 patients.

We suspect that it may also be part of the reason to have cognitive decline accelerated over time in people more vulnerable. "

While such determinations are still largely discounts - based, but discounts - Many scientists and doctors expect a surge in cases of dementia-related sources brain damage years and decades to come. There Hopefully, the researchers say, this upcoming new study will help illuminate the path ahead.

Loneliness is also harmful to your brain

While these researchers have addressed the effects of the virus on the nervous system, other researchers are concerned about the social effects of the corona epidemic on our brains.

"Socialism is very essential for maintaining the proper functioning of the brain," says Prof. Ilana Gozes, a brain research expert from the Faculty of Medicine at Tel Aviv University. "The corona can cause sadness and sometimes depression, because older people are looking for a horizon that is not so common these days, especially on closed days when you are closed at your mothers' door."

"The problem today is that on the one hand we care about the health of the adults from the corona, but on the other hand, we harm them socially and the joy of life. Bottom line, loneliness is problematic and can lead to degeneration. "The deterioration to dementia and other adverse effects may be avoided."

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