The Claim

In asymptomatic individuals, elevated myocardial glucose uptake, as measured by 18F-FDG PET imaging, may persist for up to 180 days following mRNA vaccination, potentially indicating subclinical myocardial inflammation or metabolic dysfunction.

Source: Long‐lasting, biochemically modified mRNA, and its frameshifted recombinant spike proteins in human tissues and circulation after COVID‐19 vaccination

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
1score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

After getting an mRNA vaccine, some people who feel totally fine might still show signs of heart inflammation or changes in heart metabolism on a special scan — and those signs could last up to six months.

See the scientific wording

Elevated myocardial glucose uptake, as measured by 18F-FDG PET imaging, may persist for up to 180 days after mRNA vaccination in asymptomatic individuals, suggesting subclinical myocardial inflammation or metabolic dysfunction.

What the research says

1 study

  1. Study: Long‐lasting, biochemically modified mRNA, and its frameshifted recombinant spike proteins in human tissues and circulation after COVID‐19 vaccination

    The study talks about how the vaccine's effects can last in the body longer than expected, and it specifically mentions increased heart muscle activity on scans for up to 180 days, which matches the claim.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.