Health
Studies show that COVID-19 can cause brain aging
October 29, 2020-Coronavirus affects brain function and can cause mental decline, which is equivalent to aging of the brain, for about 10 years. New research It is published on the preprint server MedRxiv. This study has not yet been peer reviewed.
It turns out that even those who have recovered from COVID-19 can face “chronic cognitive consequences.” In the worst case, mental decline was similar to a 8.5 IQ point drop.
“The results are consistent with the’brain fog’reported by many who say they can’t concentrate or focus on their work as they used to, even months after recovery.” Adam Hampshire, Physician and Senior Researcher at Imperial College London, said. ,Said London Times..
The study analyzed more than 84,000 cognitive tests in the United Kingdom that recovered from confirmed or suspected COVID-19. They found that recovered patients performed worse on cognitive tests in multiple areas than expected by age and other demographics. The test included questions that measured problem-solving ability, working memory, selective attention, and emotional processing.
They found that cognitive decline led to a “substantial effect size” that was greater based on the severity of COVID-19 symptoms. There were particularly obvious changes among those who were hospitalized, but there were also changes among those who were not hospitalized.
The authors write that the average score for those who are hospitalized and ventilated corresponds to a 10-year decline in brain performance. They added that this is similar to the 8.5 point difference in the classic IQ test. The differences were most pronounced in problem-solving challenges and visual selective attention, which were observed in previous studies of inpatients with respiratory disease, they wrote.
“As a result, the observation of post-infection deficits in the ventilated subgroup was not surprising,” the research team wrote. “On the contrary, if I didn’t wear a ventilator, especially when I was at home, the deficit was unexpected.”
The team writes that the findings are a “Clarion Call” for further research. For example, the limitation of this study was that researchers were unable to perform before and after cognitive test scores.
“Participant cognitive function was unknown prior to COVID and the results do not reflect a long-term recovery, so cognitive effects may be short-term,” said the University of Edinburgh. Joanna Wardlaw, a professor of applied neuroimaging at the University of Edinburgh, said. Told Reuters..
Derek Hill, a professor of medical imaging science at the University College London, told Reuters that the study was “intriguing but comprehensive.”
“Researchers are trying to better understand the long-term effects of COVID, so how much cognition is affected in the weeks and months after infection, and permanent damage to brain function. It is important to further investigate whether it will be brought to the people of the department, “he said.
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