Having the Covid after 65 years would increase the risk of Alzheimer’s disease according to a study

Having the Covid after 65 years would increase the risk of Alzheimer’s disease according to a study
Having the Covid after 65 years would increase the risk of Alzheimer’s disease according to a study

The coronavirus sometimes leaves serious consequences. According to an American study, contracting Covid-19 would increase the risk of suffering from Alzheimer’s disease one year later.

A recent American study published in the Journal of Alzheimer’s Disease has just demonstrated that people over 65 who have been affected by Covid-19 are more likely to suffer from Alzheimer’s disease just one year after being sick. Scientists from the Case Western Reserve School of Medicine in Ohio (USA) began research based on information from more than 6 million patients aged 65 and over, as reported Top health.

They analyzed the records of millions of anonymous people who received medical treatment between February 2020 and May 2021 but did not develop Alzheimer’s disease before the work began. To these data, they also compared those of the participants, divided into two distinct groups: one composed of people who had had Covid-19 (400,000 people) and the other, composed of people who had not developed Covid-19 infection (5.8 million people).

Women over 85 even more at risk

It emerged from this study that women over the age of 85 and the elderly who contracted Covid-19 twice the risk (0.35 to 0.68%) of suffering from Alzheimer’s disease, one year after being diagnosed. Indeed, it was noted that between the two groups of volunteers, the one with the elderly infected with Covid-19 present a considerably higher risk (up to 50% to 80%) of contracting Alzheimer’s disease. than the control group.
“If this increase in new Alzheimer’s disease diagnoses continues, the surge of patients with a currently incurable disease will be large and could further strain our long-term care resources”notes Pamela Davis, co-author of the study.

“Alzheimer’s disease is a serious and difficult disease, and we believed that we had partially reversed the trend by reducing general risk factors such as hypertension, heart disease, obesity and physical inactivity. Today, the consequences of Covid-19 are still emerging. It is important to continue to monitor the impact of this disease on future disabilities”continues the scientist.

Covid-19 and the risk of neurodegenerative diseases: what are the links?

It is not yet known whether Covid-19 triggers a new development of Alzheimer’s disease or accelerates its emergence. In-depth research will be carried out by this American team to detect the link between Alzheimer’s and neurodegenerative disorders. However, the factors that play in the development of the disease are poorly understood, but two elements are considered important: previous infections, especially viral infections, and inflammation”notes Pamela Davis.

According to Rong Xu, corresponding author of the study and professor of biomedical informatics, the next experiments around the effects of Covid-19 on Alzheimer’s disease and other neurodegenerative disorders will focus on the type of subpopulations that can be the most vulnerable.


The article is in French

Tags: Covid years increase risk Alzheimers disease study

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