A new peer-review study published in the journal EXCLI in July 2025 has concluded that cancer risk has dramatically risen in people who have has the COVIS vax. Children's Health Defense has a breakdown of the study, with an analysis by nursing educator John Campbell:
"Cancer risk surged 23% in people who received the COVID-19 vaccine, according to a peer-reviewed study published in EXCLI Journal in July 2025.
The risk of breast cancer jumped 54% and bladder cancer rose 62% within 180 days of the first vaccination, the study showed.
"This is real data and quite concerning," medical commentator John Campbell, Ph.D., said on his YouTube show as he broke down the results.
The study was the first to uncover statistically significant evidence of increased cancer risk following COVID-19 vaccination.
Researchers examined the long-term relationship between SARS-CoV-2 vaccinations and cancer hospitalizations in a population-wide cohort of nearly 300,000 residents of Pescara province, Italy.
Residents ages 11 and older were followed from June 2021 through December 2023 using official National Health System data.
The statistical models were adjusted for age, sex, comorbidities, prior cancer and prior SARS-CoV-2 infection, making it the most comprehensive follow-up to date on cancer diagnoses following COVID-19 vaccination.
The risk of cancer diagnosis was 23% higher for people vaccinated with one or more doses within 180 days of the first vaccine, versus the unvaccinated, the study found.
Among the 296,015 people studied, 3,134 were diagnosed with cancer.
"Even with this relatively small sample size," Campbell said, there is "only one chance in a thousand that this result arose by chance."
People receiving at least three doses of the COVID-19 vaccine had a 9% increased risk of cancer diagnosis within 180 days of the third vaccination, compared to the unvaccinated.
Two factors contribute to the drop in increased risk with more vaccine doses, Campbell said.
"One is that those people that were predisposed to get cancers basically had already developed it" before the 180-day post-third-dose deadline was reached, Campbell said. "So perhaps the 23% increase in cancers at six months means that people that are going to get cancer … may get it early."
Secondly, cancer follow-up requires decades for adequate analysis, he said.
There were no long-term COVID-19 vaccine studies, and "that was the whole problem," Campbell said. "They vaccinated the control groups in very short order … so the whole thing was a complete debacle."
"We won't know the answer … for the next 10, 20 years … as more people are diagnosed with cancer," he said.
Nearly all cancers showed upward trend
Breast, bladder and colorectal cancers showed the highest, statistically significant increases in vaccinated patients compared to unvaccinated.
The risk of breast cancer increased 54% and bladder cancer rose 62% in people with at least one dose of the COVID-19 vaccine, 180 days after they received the shot. Colorectal cancer was up 34%.
In people with at least three doses of the COVID-19 vaccine, at 180 days after the third dose, the risk of breast cancer was up 36% and bladder cancer was up 43%.
The risk of colorectal cancer rose 14%, but this increase was not considered statistically significant due to the small sample size in the study.
Uterine and ovarian cancers also showed increases following both one and three doses, though the numbers were not statistically significant.
Campbell explained:
"It looks like there's a genuine increase, but when you take into account the fact that [3,134] people were admitted with cancers, when you broke that down by cancer types, sometimes the numbers weren't sufficient to give a statistically significant result."
However, if the study were on a larger scale, "my suspicion is that these would be, I'm afraid, highly highly significant," he said.
'Healthy vaccinee bias' may warp cancer risk numbers
In addition to analyzing cancer risk, the study assessed the risk of all-cause mortality associated with COVID-19 vaccination status.
Results showed vaccinated people had a lower likelihood of all-cause death throughout the study.
"This is almost certainly attributable to what we call the healthy vaccinee effect," Campbell said. "We were told, manipulated, lied, whatever you want to call it, that this vaccine was good for our health. So, people with an interest in health tended to get vaccinated."
The study's authors said the same healthy vaccinee bias that makes vaccines look like they reduce deaths could also underestimate cancer risks. They wrote:
"The healthy vaccinee bias, similarly to how it likely leads to an overestimation of vaccine effectiveness against all-cause death, could also lead to an underestimation of the potential negative impact of vaccination on hospitalization due to cancer. Indeed, the healthier lifestyle that is typically associated with vaccination may reduce the risk of lifestyle-associated carcinomas."
Campbell agreed with the authors. Vaccines caused or were associated with more cancers than they were able to identify, he suggested.
Certain biological factors indicate an association between the COVID-19 vaccines and cancer, according to Campbell, who said:
"Ongoing production of spike protein will cause inflammation. Ongoing inflammation is associated with cancer. Autoimmune attacking of the tissues will cause chronic inflammation. …
"DNA contamination … there certainly is a great theoretical risk of cancer, largely by inhibiting tumor suppressor genes. Frameshifting … you end up with rogue proteins. … Rogue proteins, inflammation, any mutation, of course, is a cancer. I mean, our cancer starts as a mutation. So lots of plausible mechanisms there."
Evidence pointing to the dangers of the COVID-19 vaccines is growing, yet governments refuse to release detailed information on vaccinations versus health incidents, Campbell said, calling that failing "quite outrageous."
The lack of data suggests "a cover-up, and it's not acceptable," he said. "But sadly, this is the current period of time we are in."
https://pmc.ncbi.nlm.nih.gov/articles/PMC12381369/
AbstractAnecdotal reports suggested an association between SARS-CoV-2 vaccination and some cancers, but no formal assessment has been published. This population-wide cohort analysis was aimed at evaluating the risk of all-cause death and cancer hospitalization by SARS-CoV-2 immunization status. Using National Health System official data, the entire population of the Pescara province, Italy was followed from June 2021 (six months after the first vaccination) to December 2023. Cox models were adjusted for age, gender, previous SARS-CoV-2 infection, and selected comorbidities. Of the 296,015 residents aged ≥11 years, 16.6% were unvaccinated, 83.3% received ≥1 dose, and 62.2% ≥3 doses. Compared with the unvaccinated, those receiving ≥1 dose showed a significantly lower likelihood of all-cause death, and a slightly higher likelihood of hospitalization for cancer (HR: 1.23; 95% CI: 1.11-1.37). The latter association was significant only among the subjects with no previous SARS-CoV-2 infection, and was reversed when the minimum time between vaccination and cancer hospitalization was set to 12 months. The subjects who received SARS-CoV-2 vaccination showed a substantial reduction in all-cause mortality, and a risk of cancer hospitalization that varied by infection status, cancer site, and the minimum lag-time after vaccination. Given that it was not possible to quantify the potential impact of the healthy vaccinee bias and unmeasured confounders, these findings are inevitably preliminary."