South Korean study links COVID-19 vaccines to increased risk of 6 cancers
By isabelle // 2025-10-03
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  • A South Korean study links COVID-19 vaccines to a 27 percent higher overall cancer risk.
  • Vaccinated individuals faced significantly higher risks for six specific cancers.
  • Both mRNA and non-mRNA vaccines were associated with increased cancer incidence.
  • Booster doses were linked to even higher risks for certain cancers, like pancreatic cancer.
  • Researchers call for more studies to determine causation.
A groundbreaking new study from South Korea has revealed a disturbing statistical association between COVID-19 vaccines and a significant increase in cancer diagnoses. The research, which tracked the health records of 8.4 million adults, found that vaccinated individuals faced a 27 percent higher overall risk of being diagnosed with cancer within one year of their shot. This brave investigation, published in the journal Biomarker Research, dares to ask the questions that global health authorities have long suppressed. The large-scale population-based study analyzed data from the Korean National Health Insurance Service database between 2021 and 2023. Participants were categorized into two groups based on their COVID-19 vaccination status. The results showed statistically significant increases in the risk of six specific cancers, a finding that challenges the official narrative of universal vaccine safety. According to the study, the elevated risks were stark and alarming. Vaccinated individuals showed a 35 percent higher risk of thyroid cancer, a 34 percent higher risk of gastric cancer, and a shocking 68 percent higher risk of prostate cancer. The  risk of lung cancer increased by 53 percent, while breast cancer and colorectal cancer risks rose by 20 percent and 28 percent, respectively.

No vaccine was safe

The research team meticulously analyzed different vaccine technologies, and the results should give pause to anyone who received any COVID-19 shot. The data revealed that no vaccine technology was free from cancer risk. mRNA vaccines from Pfizer and Moderna were associated with a 20 percent higher overall risk of cancer and were specifically linked to increased risks of thyroid, colorectal, lung, and breast cancers. Non-mRNA COVID-19 vaccines, known as cDNA vaccines which include the AstraZeneca and Johnson & Johnson shots, were associated with a 47 percent higher overall risk of cancer. These vaccines were specifically linked to an increased risk of colorectal, gastric, lung, prostate and thyroid cancers. Patients who received a mixture of mRNA and cDNA doses also faced increased risk, with a 34 percent higher incidence of cancer overall.

Demographic dangers

The study further revealed that certain populations were particularly vulnerable. Vaccinated people under 65 years of age were at particular risk of thyroid and breast cancers, while the elderly population showed heightened susceptibility to prostate cancer. The analysis also indicated that vaccinated women had a relatively higher overall risk of cancer than vaccinated men. Perhaps most concerning, the study found that COVID-19 boosters resulted in a substantially higher risk of certain cancer types. This included a 125 percent higher risk of pancreatic cancer and a 23 percent higher risk of gastric cancer among those who received booster doses. However, critics note that these elevated numbers may reflect screening bias, as individuals who opt for booster shots are typically more engaged with healthcare and more likely to undergo cancer screenings that detect existing tumors. The authors suggested that clinicians should prioritize monitoring the risk of gastric cancer in relation to COVID-19 booster doses. The South Korean researchers acknowledged their study shows statistical association rather than proven causation. They called for more research to elucidate potential causal relationships, including the underlying molecular mechanisms related to COVID-19 vaccine-induced hyperinflammation. They noted that given the decreasing severity of COVID-19, current concerns regarding the COVID-19 vaccine primarily revolve around adverse events even with booster shots.

The full consequences of these experimental vaccines are still unknown

This study adds to a growing body of research questioning the long-term safety of COVID-19 vaccinations. As more data emerges from around the world, it becomes increasingly clear that the full consequences of these experimental medical interventions remain unknown. The South Korean researchers deserve recognition for their courage in publishing these findings despite the certain backlash from pharmaceutical interests and their captured regulatory agencies. For anyone who trusted the official narrative that these vaccines were thoroughly tested and completely safe, this study serves as a sobering reminder that the truth often emerges slowly, against powerful resistance. The long-term health implications of the global vaccination campaign may take years to fully understand, but this research suggests the consequences could be far more severe than anyone was led to believe. Sources for this article include: ChildrensHealthDefense.org BiomarkerRes.BioMedCentral.com News18.com DailyMail.co.uk
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