New Study Reveals Link Between COVID And Brain Damage

New Study Reveals Link Between COVID And Brain Damage

 Inflammatory cells outside the brain may penetrate brain tissue and propagate inflammation in persons with severe COVID. Blood vessel alterations might occur. Modifications in brain cells may even resemble those found in persons with Alzheimer’s disease. Recent research has looked at the consequences of mild COVID on the brain for the first time. The results may shed further light on some of the brain alterations linked to extended COVID.


Changes in the brain are shown through scans and testing.

Many individuals who’ve had COVID have “brain fog,” lethargy, and attention and memory issues even after their early symptoms have subsided. Even with a modest infection, these issues, known as “long COVID,” may linger for months. Long COVID is highly frequent, affecting more than half of all COVID patients, even if they have a minor disease.


As part of the enormous UK Biobank dataset, researchers gathered information. They examined brain magnetic resonance imaging (MRI) scans and cognitive tests in 785 participants who had been evaluated before the epidemic. The researchers then compared this to data gathered three years afterward, when around half of the subjects had moderate COVID infection and the other half did not. The scientists were able to pinpoint the particular consequences of mild COVID infections on brain organization and function as a result of this.


The study

When contrasted to their pre-COVID scan, the group that had moderate COVID an average of five months prior demonstrated thinning of brain tissue in multiple brain locations, ranging from 0.2 percent to roughly 2%. This is about the counterpart of one to six years of typical brain aging. The parahippocampal gyrus (a memory-related area) and the orbitofrontal cortex,  positioned toward the frontal part of the brain and is responsible for flavor and taste, were both impacted.


The post-COVID subgroup also exhibited changed interconnections between distinct brain areas in the olfactory cortex, a region connected to smell, which was not detected in the non-COVID group. They did poorly on a concentration and cognitive agility test, which was linked to volume decreases in a cerebellar region connected with scent and social interactions.

Anna Daniels

Anna is an avid blogger with an educational background in medicine and mental health. She is a generalist with many other interests including nutrition, women's health, astronomy and photography. In her free time from work and writing, Anna enjoys nature walks, reading, and listening to jazz and classical music.

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