A recent research reveals that older persons with Covid-19 infection have a significantly increased risk of acquiring Alzheimer's disease within a year compared to the control group, by as much as 50 percent to 80 percent.

The study, published in the Journal of Alzheimer's Disease, indicated that adults 65 and older with Covid-19 were more likely to develop Alzheimer's disease the year after their Covid-19 diagnosis. Furthermore, women who were at least 85 years old showed the highest risk.

The results demonstrated that after infection with Covid-19, the risk of Alzheimer's disease in older persons substantially quadrupled (0.35 to 0.68 percent) over a one-year period.

According to researcher Pamela Davis from Case Western Reserve University, "The variables that contribute to the development of Alzheimer's disease have been poorly understood, but two parts are deemed important: past infections, especially viral infections, and inflammation."

"We wanted to explore whether, even in the short term, Covid-19 could lead to greater diagnoses," she said, "because infection with SARS-CoV2 has been associated with central nervous system abnormalities including inflammation."
For the study, the team examined 6.2 million US people 65 and older who got medical care between February 2020 and May 2021 but who had not previously been diagnosed with Alzheimer's disease.

Then, they split this population into two groups: one with individuals who had Covid-19 during that time, and the other with individuals who had no confirmed cases of the virus.

The Covid-19 research group had more than 400,000 participants, compared to 5.8 million in the non-infected group.

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