2024-03-01 20:27:27
A study published this Thursday, February 29 in a British scientific journal suggests a long-lasting symptom: brain fog.
New information on the disease, four years following its appearance. Some people infected with Covid-19 might suffer effects on their cognitive faculties, as suggested by a British study published this Thursday, February 29 in the New England Journal of Medicine, and relayed by Le Parisien.
By following nearly 112,964 British adults from August to December 2022, they were able to determine that certain people infected and then recovered in less than a month suffered a loss of daily intellectual (IQ) of the order of three points. An effect that can continue over time, up to a year following infection and recovery.
For people suffering from long Covid, with symptoms persisting for at least three months, the drop reaches 6 IQ points and rises to -9 points among patients who have been hospitalized. But these much greater declines (the IQ fluctuates around 100 points) are partly resolved to reach the same level as those of shorter infections.
“Participants whose persistent symptoms resolved following Covid-19 had objectively measured cognitive function similar to that of participants with short-term symptoms,” point out the authors.
Long Covid and sports practice: a life in slow motion!
Uncertainties
These lessons come almost four years following the start of the epidemic. But they remain fragmented. “The long-term persistence of cognitive deficits and possible clinical implications remain uncertain,” the authors emphasize in their report.
However, these results are in line with previous studies carried out on this point, following several people reported a form of mental fog: difficulty with attention, memory, difficulty reasoning, etc.
But how can we explain that a disease considered to be respiratory can affect our cognitive functions? “It is unlikely that a single mechanism comes into play,” said Adam Hampshire, one of the neuroscientists co-author of the study, speaking to Le Parisien.
As highlighted in 2022 by Jean-Christophe Corcol, neurologist at Pitié-Salpêtrière hospital, brain lesions might appear in our vascular system due to the response that our body emits to fight the virus.
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