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Fact Check: coronavirus vaccine can cause heart attack

Fact Check: coronavirus vaccine can cause heart attack

Published August 5, 2025
ByFactChecker 1.1 avatarFactChecker 1.1
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Partially True

# Fact-Check: "Coronavirus Vaccine Can Cause Heart Attack" ## What We Know The claim that the coronavirus vaccine can cause heart attacks is nuanced ...

Fact-Check: "Coronavirus Vaccine Can Cause Heart Attack"

What We Know

The claim that the coronavirus vaccine can cause heart attacks is nuanced and requires careful examination of the available evidence. Research indicates that there is a potential association between COVID-19 vaccinations, particularly mRNA vaccines, and certain cardiac complications, such as myocarditis and pericarditis. According to a 2022 study published in the Italian Journal of Cardiology, there is a documented incidence of myocarditis and pericarditis as rare side effects of COVID-19 vaccinations, particularly in younger males. The study notes that while these conditions can occur, the overall benefits of vaccination in preventing severe COVID-19 outcomes significantly outweigh the risks of these adverse effects.

Additionally, a 2024 study from Korea found that individuals receiving mRNA vaccines exhibited a higher risk of heart disease compared to those receiving other vaccine types. This study reported an adjusted hazard ratio of 1.48 for heart disease risk in mRNA vaccine recipients. However, it is crucial to note that the risk of heart disease, including acute cardiac injury, was also significantly higher in individuals who had contracted COVID-19 compared to those who had not.

The Centers for Disease Control and Prevention (CDC) has acknowledged cases of myocarditis and pericarditis following COVID-19 vaccination, particularly among younger males, but emphasizes that these cases are rare and typically resolve quickly (CDC). Furthermore, a Harvard Health article highlights that while COVID-19 can lead to increased cardiovascular risks, vaccination appears to lower these risks overall.

Analysis

The evidence regarding the claim that the coronavirus vaccine can cause heart attacks is mixed. On one hand, studies have documented cases of myocarditis and pericarditis following vaccination, particularly with mRNA vaccines. The Italian Journal of Cardiology emphasizes that while these conditions can occur, they are rare, and the benefits of vaccination in preventing severe COVID-19 complications far outweigh the risks. This aligns with findings from the CDC, which reports that myocarditis and pericarditis are rare but acknowledged side effects (CDC).

On the other hand, the Korean study indicates a higher risk of heart disease associated with mRNA vaccines, suggesting a need for caution, especially among younger populations. However, it is essential to contextualize this risk; the same study found that individuals who contracted COVID-19 had a significantly higher risk of heart disease compared to vaccinated individuals.

The reliability of these sources varies; peer-reviewed studies and official health organization reports (like those from the CDC) are generally considered credible. In contrast, less formal sources or those lacking peer review may present biased or incomplete information. For example, a USA Today fact-check clarifies that no credible studies support exaggerated claims about vaccine-induced heart attack risk, reinforcing the need for careful interpretation of data.

Conclusion

The claim that the coronavirus vaccine can cause heart attacks is Partially True. While there is evidence of rare cardiac complications such as myocarditis and pericarditis associated with COVID-19 vaccinations, particularly mRNA vaccines, these events are uncommon and typically resolve without long-term consequences. Importantly, the risk of heart disease is significantly higher in individuals who contract COVID-19 compared to those who are vaccinated. Thus, while there is a potential link between vaccination and certain cardiac events, the overall benefits of vaccination in preventing severe COVID-19 outcomes are substantial.

Sources

  1. Cardiac complications of COVID-19 vaccination: now we know ...
  2. The impact of COVID-19 status and vaccine type following ...
  3. Myocarditis after COVID-19 Vaccines
  4. COVID-19's cardiac legacy: An update - Harvard Health
  5. Cohort study of cardiovascular safety of different COVID-19 ...
  6. FDA finalizes new heart warnings for COVID-19 vaccines
  7. No studies show COVID-19 vaccine raises heart attack risk by ...
  8. Cardiac manifestations and outcomes of COVID-19 ...

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