South Korean Study Links COVID-19 Vaccination to Higher Risk of Six Cancers

A 1-year population-based cohort study in South Korea, involving 8.4 million adults, was published last week to evaluate cancer risks associated with COVID-19 vaccination. The authors conclude that COVID-19 vaccination “could be associated with an increased risk of six specific cancer types, including thyroid, gastric, colorectal, lung, breast, and prostate cancers.” The risk was “likely more elevated” for individuals 65 years old and up, except for those with prostate cancer. Those under 65 were at an increased risk of thyroid and breast cancers.

The authors note there is not enough information to make a causal inference from this study and encourage further research. “Further studies are warranted to elucidate potential causal relationships, including the underlying molecular mechanisms related to COVID-19 vaccine–induced hyperinflammation,” the authors wrote.

Dr. Peter McCullough has referenced the concept of “turbo cancers” in relation to the COVID-19 mRNA vaccinations. Dr. Paul Marik and Justus Hope published a review in 2025 that suggests the potential pathways by which the mRNA vaccines could be contributing to the proliferation of “turbo cancers.”

“While mainstream discourse has largely dismissed these cancers as coincidental or biologically implausible, the mechanistic data presented in this review suggest otherwise,” Dr. Marik and Hope wrote. “The SARS-CoV-2 spike protein may interfere with core regulatory pathways of carcinogenesis, including metabolic reprogramming, immune surveillance, apoptosis resistance, and stem cell proliferation.”

Dr. Aseem Malhotra responded to the release of the South Korean study. “I’m afraid one of Britain’s most eminent oncologists, Professor Angus Dalgleish, may well be right on the COVID ‘vaccines’ fuelling cancer,” Dr. Malhotra said. “This study, published in a very respected high-impact journal, is significant and concerning.”

Former Wall Street analyst Edward Dowd posted about the correlation between increased cancer incidence and the COVID-19 vaccine rollout in March of 2024. He stated, “Excess cancer deaths over trend as underlying cause rose in working age US citizens (15-44) in 2021 and 2022 by 5.6% (z-score 11.8) and 7.9% (z-score 16.5). 2020 saw a rise of 1.7% (z-score 3.5). The novel phenomenon is real. CDC and the medical establishment need to investigate.”

Dowd added that the number corroborates the conclusions of an October 2023 statistical analysis of excess deaths in the United Kingdom, stating the “current annualised excess mortality for 2023 is around 20% for the 15-44 age group, a substantial rise from the prior level in 2022, which was slightly above 10%.”

In February 2025, Dr. Robert Malone shared an analysis from Grok that concluded there is a statistically significant positive correlation between COVID-19 vaccination and breast cancer for women under 40 years old with a 95% confidence level.

The HighWire has reported about concerns associated with the mRNA vaccines, including shedding and potential DNA integration of which the CDC failed to prove is “biologically impossible” despite the claim. Florida Surgeon General Dr. Joseph Ladapo called for the mRNA COVID-19 vaccines to be pulled from the market when the federal health agencies were unable to assure him that DNA integration is not possible.

While Dr. Ladapo has called for the vaccines to be withdrawn from the market, he issued a statement to counter the misinformation that the Florida Department of Health is requiring a prescription to obtain COVID-19 vaccines.

“We’ve heard from some older Floridians who believe the Florida Dept of Health is preventing them from accessing COVID-19 vaccines in pharmacies or requiring that they obtain a prescription,” Dr. Ladapo said. “This is a hoax. Although these vaccines are unsafe and not fit for human use, the decision to administer them at a pharmacy rests in the hands of the pharmacist or pharmacy. FDOH is not involved in this decision.”

The American Cancer Society released a report and statistical analysis in January that found cancer mortality decreased by 34% from 1991 to 2022. At the same time, the incidence rate of various cancers has continued to climb each year, dating back to the 90s. The report notes increases in breast cancer, prostate, pancreatic, uterine corpus, melanoma, liver, and oral cancers associated with the human papillomavirus.

The authors note a steady increase in colorectal cancer for younger age groups. “From 2012 through 2021, incidence increased by 0.4% per year in those aged 50–64 years and by 2.4% per year in younger adults,” the report states. “Rising incidence in the United States and several other high-income countries since the mid-1990s75 remains unexplained but likely reflects changes in lifestyle exposures that began with generations born during the last one half of the 20th century.”

The upward trend has been present for decades as the data continues to roll in regarding a correlation between increased cancer diagnoses and COVID-19 vaccination. The decrease in mortality over the last three decades, despite the increase in cancer incidents, points to improved diagnostics and potential overdiagnosis of cancer.

Dr. Malhotra has received backlash for suggesting the COVID-19 vaccines played a role in the cancer diagnosis for members of the royal family while speaking at the Reform Party in Birmingham. “One of Britain’s most eminent oncologists, Professor Angus Dalgleish, said to me to share with you today that he thinks it’s highly likely that the COVID vaccines have been a significant factor in the cancer of members of the royal family,” Dr. Malhotra said.