The role that a key ingredient in the COVID-19 mRNA vaccine plays in cancer development has been analyzed in a comprehensive review newly published in a peer-reviewed scientific journal. The conclusion: The specific form of this ingredient, pseudouridine, that Pfizer and Moderna use to make their vaccines aids cancer development.

N1-methyl-pseudouridine (I will call it pseudoU in this article) is a critical component of the mRNA vaccine. Pfizer and Moderna chemically introduce pseudoU into their vaccines to make the mRNA molecules last longer in the human body (escaping degradation by enzymes), and to avoid suppression by the innate immune system, the body’s first line of defense against foreign invaders.

The study, titled “Review: N1-methyl-pseudouridine: Friend or foe of cancer?” is authored by five scientists from Mexico, UK, Canada, United States, and Saudi Arabia and was published in the May 2024 issue of International Journal of Biological Macromolecules.

PseudoU Aids Cancer Development