No, a study has not shown that the covid jab causes cancer

Claims that a South Korean study proves COVID-19 vaccines cause a 27% increase in cancer risk lack statistical validity and fail to account for critical confounding variables. While the data comes from a reputable journal, the findings were published as a correspondence article, which may not undergo the same rigorous peer review as full reports. Professor Justin Fendos, an expert in health informatics, notes that the study ignored essential risk factors like smoking and genetics while failing to adjust for "health-seeking behaviors," where vaccinated individuals are simply more likely to participate in cancer screenings. Furthermore, the researchers analyzed 29 different cancer types without applying a necessary statistical correction for multiple comparisons; once corrected, the purported link between vaccines and cancer effectively disappears. The short one-year observation window also contradicts the known multi-year biological timeline of cancer development, suggesting any diagnoses were likely pre-existing rather than vaccine-induced.