COVID-19 may cause loss of brain tissue — UK study

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Even mild cases of COVID-19 may lead to loss of brain tissue, according to findings from a long-term study involving 782 volunteers.

As part of the ongoing UK Biobank study, participants underwent brain scans before the pandemic.

For a before-and-after comparison, researchers invited 394 COVID-19 survivors to come back for follow-up scans as well as 388 healthy volunteers.

Most of the COVID-19 survivors had had only mild-to-moderate symptoms, or no symptoms at all, while 15 had been hospitalized.

Among the COVID-19 survivors, researchers saw “significant” loss of gray matter in regions of the brain related to smell and taste – the left parahippocampal gyrus, left orbitofr…

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