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Long-term Cardiovascular Risks After Covid-19 Infection Study Unveils Troubling Findings


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A new study suggests that Covid-19 could significantly raise the risk of heart attacks, strokes, and death for up to three years after infection. This alarming discovery was published in *Atherosclerosis, Thrombosis, and Vascular Biology* and draws on medical data from the UK Biobank, one of the largest health databases globally.

 

The study analyzed over 250,000 people, of which 11,000 tested positive for Covid-19 in 2020. Nearly 3,000 of these individuals had been hospitalized due to severe infections. The researchers compared these groups with over 222,000 people who had no history of Covid-19 during the same time period.

 

The results were striking. Individuals who contracted Covid-19 in 2020, before vaccines were available, were found to have twice the risk of experiencing a major cardiac event, such as a heart attack, stroke, or death, compared to those who were not infected. For those who had been hospitalized due to Covid, the risk of a serious heart event was more than three times higher.

 

Dr. Stanley Hazen, one of the study's authors and chair of Cardiovascular & Metabolic Sciences at the Cleveland Clinic, remarked on the severity of the findings. "There’s no sign of attenuation of that risk," Hazen said, adding that this persistence of risk is unique to Covid-19. Other infections like influenza generally raise heart attack risks but only for a brief time after recovery. In contrast, Covid-19 appears to have long-lasting cardiovascular consequences.

 

Dr. Patricia Best, a cardiologist at the Mayo Clinic, also emphasized the study's implications. "This is just such a large effect, and I think it’s just because of how different Covid is than some of the other infections," Best said, highlighting how the virus continues to affect the heart and blood vessels long after the initial infection subsides.

 

One of the study's key findings was the role of blood type in these risks. Individuals with non-O blood types—A, B, or AB—were found to be at higher risk of heart attacks and strokes after a Covid-19 infection. While people with O-type blood appeared somewhat more protected, they still faced an elevated risk. The exact reasons for these differences remain unclear, but researchers believe that the gene linked to blood type may influence cardiovascular outcomes after a Covid-19 infection.

 

The researchers also looked at whether pre-existing genetic risks for heart disease made people more vulnerable to heart attacks or strokes after contracting Covid-19. Surprisingly, they found no clear link between genetic predisposition and post-Covid heart issues. However, one encouraging finding was that patients who were hospitalized with Covid and were taking low-dose aspirin had a reduced risk of experiencing a heart attack or stroke. This suggests that there are ways to mitigate some of the cardiovascular dangers posed by the virus.

 

Earlier studies have shown that Covid-19 can infect the endothelial cells lining the blood vessels, which may lead to inflammation and the formation of dangerous plaques in the arteries. These plaques can rupture and trigger heart attacks or strokes, which could explain the long-term cardiovascular risks associated with the virus. "There might just be something that Covid does to the artery walls and the vascular system that is sustained damage and just continues to manifest over time," explained Dr. Hooman Allayee, a professor at the Keck School of Medicine, USC.

 

The study did not examine the impact of Covid-19 vaccinations on cardiovascular risk, but Hazen speculated that vaccines likely provide protection by preventing severe infections. Nor did the study delve into whether repeated Covid infections would increase the risks even further, though some emerging research has suggested that this may be the case.

 

Hazen emphasized the importance of managing cardiovascular risk for those who have had Covid-19, particularly those hospitalized with the virus. "If you’ve had Covid, we have to be especially attentive to making sure that we’re doing everything possible to lower your cardiovascular risk," he said. This includes controlling blood pressure, cholesterol, and considering daily aspirin use, depending on individual health circumstances.

 

While Covid-19's full impact on long-term health is still being unraveled, this study underscores the importance of ongoing vigilance, especially for those who experienced severe illness during the pandemic. Hazen’s advice is clear: anyone who has been hospitalized with Covid-19 should take special care of their heart health, regardless of their vaccination status.

 

Based on a report from CNN 2024-10-11

 

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"The study did not examine the impact of Covid-19 vaccinations on cardiovascular risk, but Hazen speculated that vaccines likely provide protection by preventing severe infections."  

Yep, this says it all. They have all the data but did choose NOT to look at that factor.  One can only guess why < sarcasm alert >.

Trash study....

 

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