Covid: brain atrophy, risk of stroke… these long-term effects, even after a mild form

The latest studies carried out highlight the possible long-term sequelae after a Covid infection, whether you have had a severe or mild form of the disease. These still need to be refined, but they still warn: the coronavirus is not without consequences for our health.

Two years later, Covid still presents many mysteries. Although the presidential elections and the war in Ukraine have prevailed over the rest of the news, the coronavirus pandemic has not disappeared. Indeed, This Sunday, April 10, Public Health France reported an increase in hospitalizations, 401 new hospitalizations in the last 24 hours more exactly, or 1,598 new hospitalizations per day on average during the last 7 days. We know that contaminations persist, but what do we know about the effects of the virus after a long-term infection?

Increased risk of pathologies after infection.

Several recent studies have found that aAfter an infection, the risk of other pathologies increaseseven for those who do not present a risk factor, do not develop a severe form and are not affected by the long Covid, remember franceinfo.

In April 2021, three researchers from the University of Saint-Louis (United States) conducted a study, published by the journal Nature. This last identified a number of health problems that most often affected people who had Covid-19. The researchers found that infected people, hospitalized or not, had more respiratory problems and also suffered more “neurocognitive and nervous system disorders, mental health, metabolism, cardiovascular, gastrointestinal, malaise, fatigue, musculoskeletal pain, and anemia” than people with a similar profile who have never tested positive.

Posted Aug 18, Other study established by British researchers already showed that in some patients with Covid-19, an brain gray matter atrophy is observed. And the results of this study are the same in people hospitalized with severe forms as in people who have had few symptoms. Similar results to the study conducted in April 2021. This atrophy is usually observed during aging, as highlighted ICL.

Also in October 2021, one study indicated that people who had contracted Covid would have memory and concentration problems months after your infection.

Most common heart problems

A study on cardiovascular risks allowed to highlight increased risk of stroke in people who test positive for coronavirus (more than 150,000 have been observed). Indeed, this risk is multiplied by 1.52 in the year following infection, the risk of pulmonary embolism by 2.93, and that of acute coronary syndrome by 1.72.

Patients cured of Covid-19 are also at higher risk of developing kidney-related pathologies, according to a study by the same American team, published in November in the Journal of the American Society of Nephrology. The data point in particular to a risk of end-stage kidney disease multiplied by three in ex-Covid-19 patients (and by 2.15 in those who were not hospitalized), details franceinfo.

Risks of dementia, diabetes…

Authors of a published article. for the magazine Science in January, note that the damage seen in some patients “raises the possibility that the infection can accelerate or trigger the future development of neurodegenerative diseases such as Alzheimer’s or Parkinson’s disease.

A latest study of this data, published March 21 inside the lancetNote that people cured of Covid-19 are more likely (+40%) to develop type 2 diabetes in the following year.

Finally, a study entitled “What triggers severe COVID? Infected immune cells hold clues“, published in the magazine Nature this Wednesday, April 6, demonstrates how coronavirus infects immune cells and causes a massive inflammatory response of the body.

Infectologist Olivier Robineau, however, agrees with our colleagues at franceinfo: recent studies show “an indisputable increased risk” of certain pathologies for Covid-19 patients, “but in events that remain rare”.

It also points out that other elements, such as tobacco and diet, are risk factors that should not be overlooked.

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