New research suggests that COVID-19 may lower intelligence, according to a large-scale study from the United Kingdom.
July 30, 2021 -- Infection from COVID-19 may have a substantial negative effect on intelligence, according to a new large-scalefrom the United Kingdom, findings that are consistent with reports of “brain fog” among long-haul COVID-19 patients.
Researchers analyzed data from 81,337 people who took the Great British Intelligence Test in 2020. Of those, about 13,000 reported they had contracted COVID-19, and 275 of those had completed the test before and after infection.found it harder to complete tasks related to reasoning, problem-solving, and spatial planning, the authors said. Researchers controlled for age, education, and overall mood.
“The scale of the observed deficit was not insubstantial,” the authors wrote. But they said brain imaging is needed before firm conclusions can be drawn. “It is important to be cautious in inferring a neurobiological or psychological basis of the observed deficits without brain imaging data, although the assessment tasks used here have been shown to map to different networks within the human brain in terms of normal functional activity and connectivity as well as structural network damage,” they wrote.and respiratory problems could have contributed to the cognitive decline.
The study provides insight into one part of post-COVID -- a condition that has been closely tracked by the
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