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Health·September 24, 2025·10 sources

Vaccines cause cancer

FalseThis claim has been determined to be false based on available evidence.

Analysis

The claim that vaccines cause cancer lacks credible scientific support and is contradicted by extensive research. The majority of studies indicate that vaccines, including mRNA vaccines, do not increase cancer risk. For instance, long-term safety data from clinical trials of mRNA vaccines show no correlation with cancer incidence. Additionally, vaccines such as the HPV vaccine are designed to prevent certain cancers, specifically cervical cancer, by targeting the human papillomavirus, which is a known cause of this disease. While there have been historical concerns regarding certain vaccine contaminants, such as the simian virus 40 (SV40), the consensus in the scientific community is that the benefits of vaccination far outweigh any potential risks. Overall, the evidence strongly supports the conclusion that vaccines do not cause cancer.