The release of a study in pre-print form, pending peer review and publication in The Lancet, by investigators from the US and UK, found that COVID-19 infections among the elderly, those 60-years-of-age and older, caused a 60 percent increased risk of developing new-onset dementia (NOD) within a year of infection compared to controls without any other respiratory infections. 

The systematic review and meta-analysis were conducted by scientists at Columbia’s Biobehavioral Sciences Department, the University of Oxford’s Department of Psychiatry, and Lancaster University’s Centre for Ageing Research, looking at the temporal association between COVID-19 and subsequent development of NOD. 

A doctor looks at PET brain scans in Phoenix. [AP Photo/Matt York]

Their review incorporated 11 studies from North America, Europe and Asia, involving close to 940,000 positive COVID-19 cases and more than 6.7 million controls for comparison. Overall, when compared to an elderly population that never contracted COVID-19 or other respiratory infections, those with prior COVID-19 infections had a nearly two-fold increased risk of NOD at one year after infection.

The authors also compared COVID-19 patients to those without a prior COVID-19 infection but who had documented exposure to other respiratory pathogens like influenza or RSV. Significantly, in this comparison there was no difference between the groups regarding developing NOD, underscoring the danger posed by most pathogens considered “endemic” and a permanent feature of society. The implication of this finding is that among the elderly, infection with these respiratory pathogens, including SARS-CoV-2, substantially increases one’s risk of developing NOD. 

Most disconcerting was the finding that those with severe COVID-19 were much more prone to developing neurocognitive disturbances, with a 17-fold rise in the risk of acquiring NOD compared to non-severe infections. Severe COVID-19 was defined as anyone with COVID-19 who had a respiratory rate greater than 30 breaths per minute, severe respiratory distress, or oxygen saturation that dropped below 90 percent while on room air.

As the authors note in their discussion, “We believe it is among the first studies to explore the impact of COVID-19 infection on NOD risk in older adults aged 60 and above. It also proposes the protective benefits of being free from COVID-19 and other types of respiratory infections in reducing the risk of NOD.”

The study underscores the totally criminal character of the policies pursued by the capitalist ruling elites and the political establishment, who have largely dismantled public health infrastructure, insisting that COVID-19 be accepted as part of the “normal” array of pathogens that infect, sicken, and kill people each year.

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