COVID Vaccines Increase Cancer Risk, 2025 South Korean Study Concludes
COVID-19 vaccines and boosters — both mRNA and non-mRNA — pose an increased risk of six types of cancer and a 27% higher risk of cancer overall , according to a recent South Korean study of over 8 million people. Four South Korean researchers published the report last week as a letter in Biomarker Research, a Springer Nature journal. According to the study, COVID-19 vaccines and boosters are associated with a higher risk of breast, colorectal, gastric, lung, prostate and thyroid cancer, across all vaccine types and age groups. Mainstream medical commentators were quick to dismiss the findings, with MedPageToday describing it as “flawed.” But other medical and scientific experts disagreed. “In plain terms: both major COVID-19 vaccine platforms appear to be carcinogenic ,” epidemiologist Nicolas Hulscher wrote in a post on Substack. Dr. Angus Dalgleish , a medical oncologist, told The Defender ...