Covid-19 is linked to cognitive decline and acceleration of Alzheimer-like symptoms, according to research.

Covid-19 is linked to cognitive decline and acceleration of Alzheimer-like symptoms, according to research.

“Brain fog in younger individuals has a different flavor, if you will,” Erausquin said. “They have more attentional problems, more concentration problems, and frequently have more anxiety and depression.” He noted that the cognitive symptoms his team observed appear to be distinct from the “brain fog,” associated with long-term symptoms of Covid-19, sometimes seen in younger patients. It’s too soon to tell whether the cognitive issues will worsen over time — as they would in Alzheimer’s patients — or if these patients will recover, Erausquin said.

“The severity of the initial disease does not predict who is going to get this,” Erausquin told CNN. “In fact, many of them had minimal symptoms — just a cold or loss of smell.” Three to six months after they were infected, more than half of the patients still struggled with forgetfulness and about a quarter experienced additional cognitive challenges. How sick a patient was with Covid-19 was not an indicator of whether they would experience cognitive decline.

The cognitive issues –including persistent forgetfulness, difficulty sequencing tasks, and forgetting words and phrases — are similar to those seen in Alzheimer’s patients. Erausquin noted that the parts of the brain responsible for sense of smell overlap with those impacted by Alzheimer’s disease. Those who had a persistent loss of smell were more likely to experience cognitive issues, they told the Alzheimer’s Association International Conference.

“These findings suggest that patients who had COVID-19 may have an acceleration of Alzheimer’s-related symptoms and pathology,” Wisniewski said in a statement. Wisniewski said more research is needed to understand how those biomarkers affect long-term cognition in people who were infected with Covid-19. Among 310 Covid-19 patients admitted to New York University Langone Health, the team found that those with neurological symptoms had higher levels of biomarkers linked to Alzheimer’s. Those biomarkers include a protein called tau that’s been linked with Alzheimer’s and other compounds known as neurofilament light — an indicator of damage to nerve cells — and others.

In additional research presented at the conference, Dr. Thomas Wisniewski, a professor of neurology at New York University Grossman School of Medicine, and colleagues found that Covid-19 patients over the age of 60 had biological blood markers also found in Alzheimer’s patients. Biological Markers linked to Alzheimer’s

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  • Covid-19 is linked to cognitive decline and acceleration of Alzheimer-like symptoms, according to research.
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