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According to a study in the Journal of Alzheimer’s Disease, adults 65 and older with a history of COVID-19 were more likely to develop Alzheimer’s disease in the year following COVID diagnosis. Women above the age of 85 were particularly at higher risk.

Alzheimer’s is a neurodegenerative disease that often begins slowly and progresses over time. The SARS-CoV-2 infection has been linked to central nervous system abnormalities such as inflammation. The variables that contribute to the development of Alzheimer’s disease are incompetently known, but past infections, particularly viral infections and inflammation, are considered essential. It is uncertain if COVID-19 initiates or accelerates the onset of Alzheimer’s disease.

The electronic health records of 6.2 million individuals 65 and older in the United States who had received medical treatment between February 2020 and May 2021 and had never been diagnosed with Alzheimer’s were anonymously analyzed. The population was divided into two groups: individuals who contracted COVID-19 during that period and individuals with no reported cases of COVID-19. The COVID study group had over 4,00,000 individuals, while the non-infected group included 5.8 million people.

The researchers discovered that after being infected with COVID, the probability of developing Alzheimer’s disease significantly doubled from 0.35% to 0.68%.

1. Case Western Reserve University. “Risk factor for developing Alzheimer’s disease increases by 50-80% in older adults who caught COVID-19.” ScienceDaily. ScienceDaily, 13 September 2022.
http://www.sciencedaily.com/releases/2022/09/220913140850.htm

2. https://www.j-alz.com/content/dementia-and-covid-19-determinants-infection-and-mortality

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