covid vaccines cause breast cancer

Question

the covid 19 vaccine may cause breast cancer

Comments

My Claim after Fact Checking: After reading both of these articles by cancer.org and breastcancer.org it is explained that having breast cancer can weaken the covid 19 vaccine but in no way does the covid vaccine lead to breast cancer. The claim is that Covid vaccines cause breast cancer and there is just simply no evidence to that and it has actually been disproven.
https://www.breastcancer.org/managing-life/staying-well-during-covid-19/vaccine-facts

https://www.cancer.org/cancer/managing-cancer/coronavirus-covid-19-and-cancer/covid-19-vaccines-in-people-with-cancer.html

Answer 1

The claim that the COVID-19 vaccine will give you cancer. The article attached states that there is no link between the covid vaccines and cancer. The article only says that immunocompromised people may require additional vaccines due to having a weakened immune systems from procedures like chemo therapy. There is also no evidence that can establish that the covid vaccine can make cancer grow or come back. 

The claim that covid-19 vaccines is completely false. Another article by the American Cancer Society also backs this claim as false. 

https://www.cancer.org/cancer/managing-cancer/coronavirus-covid-19-and-cancer/covid-19-vaccines-in-people-with-cancer.html

https://www.breastcancer.org/managing-life/staying-well-during-covid-19/vaccine-facts

Answer 2

The claim that the COVID-19 Vaccine causes breast cancer is false and dangerous to spread. After fact checking I found an article on the American Cancer Society website discussing the vaccine, and the article describes that “People with cancer (or with a history of cancer) can get the COVID-19 vaccine safely. However, the vaccine might be less effective in some people with cancer.” The article goes on to describe that the effectiveness of the vaccine is very dependent on the individual situation of each person, and generally the vaccine is still effective. This article emphasizes that people with cancer should still get the vaccine, and that there are no instances of the vaccine causing cancer. 

https://www.cancer.org/cancer/managing-cancer/coronavirus-covid-19-and-cancer/covid-19-vaccines-in-people-with-cancer.html 

On the website Breastcancer.org there is an article about the vaccine, and this article explicitly states that “There’s no link between the COVID vaccines and breast cancer risk or developing breast cancer.” and that they recommend everyone follows the CDC guidelines and gets the vaccine. 

https://www.breastcancer.org/managing-life/staying-well-during-covid-19/vaccine-facts

It becomes clear this claim is false and there is not evidence supporting a link between getting the COVID-19 Vaccine and breast cancer. It is extremely harmful to spread this claim because it could discourage people from getting the vaccine, therefore making them more susceptible to COVID-19.

Answer 3

This claim is False, and there is no evidence that supports the claim that the COVID-19 vaccine causes breast cancer. The linked source for this claim doesn't even support this claim instead it states, “There’s no link between the COVID vaccines and breast cancer risk or developing breast cancer”. The article from Breastcancer.org suggests that immunocompromised people may receive additional vaccines from doctors because having a weakened immune system makes you more vulnerable to COVID-19. I was not able to find any articles supporting the claim that the COVID-19 vaccine may cause breast cancer, but I did find numerous articles debunking this claim including, articles from UCLA Health and the National Institute of Health (NIH).

Answer 4

The claim that the COVID-19 vaccine causes breast cancer is false. In the article, it clearly states that "There is no evidence linking COVID-19 vaccines and cancer. Both the U.S. National Cancer Institute and the American Cancer Society report that there is no information that COVID-19 vaccines cause cancer. No evidence suggests the vaccine can make cancer grow or come back," ( Recur ) the article sourced for this claim, counters itself, and clearly adds that there is no direct tie to the vaccination and cancer. https://www.breastcancer.org/managing-life/staying-well-during-covid-19/vaccine-facts

In addition to that article, 59th Medical Wing, a website that busts health myths, did an entire article about COVID-19 vaccination myths and used the breast cancer claim as one of their myths. "There is no evidence that COVID-19 vaccines cause problems with breast tissue or would lead to breast cancer. The vaccines are not affecting hormone levels nor are they traveling through the body or affecting other body organs such as breast tissue." ( 59th Medical Wing) Myths and facts about the vax — debunking common COVID-19 vaccine myths > 59th Medical Wing - JBSA - Lackland & Randolph AFB > Articles

overall this claim is false. The COVID-19 vaccination has no tie to breast cancer and has never been tied to causing it. 

Answer 5

After further looking into this claim, I have found it to be incorrect. There has been no evidence found that the COVID19 vaccine causes breast cancer in women. Looking more into this false claim, the American Cancer Society and Breast Cancer.org reported that "There’s no evidence linking COVID-19 vaccines to cancer. Both the U.S. National Cancer Institute and the American Cancer Society report there’s no information that COVID-19 vaccines cause cancer. There’s also no evidence that suggests the vaccine can make cancer grow or come back (recur) " (ACS). This false claim is proven to be incorrect based off of the report of two acclaimed breast cancer awareness and research websites. In addition to these websites, UCLA health stated in a report, "Additionally, the doctors stress that there is no correlation between the COVID-19 vaccine and breast cancer. “When this first started to hit the medical and the lay press, some of the headlines implied that there was a link between the vaccines and breast cancer...there appears to be no link between the vaccine and breast cancer. Both the COVID-19 vaccine and mammograms save lives.” The consistent findings across multiple reputable sources not only disprove the claim but also emphasize the importance of relying on expert-reviewed information rather than sensationalized (and heavily falsified) media reports. This analysis demonstrates how misinformation can spread easily when scientific evidence is ignored, and it underlines the critical role of trusted health organizations in guiding public understanding of vaccine safety.

Answer 6

This is far from correct. There is no evidence supporting the correlation between breast cancer and the covid-19 vaccine. In the article by breastcancer.org, it says "There’s no evidence linking COVID-19 vaccines to cancer. Both the U.S. National Cancer Institute and the American Cancer Society report there’s no information that COVID-19 vaccines cause

cancer. There’s also no evidence that suggests the vaccine can make cancer grow or come back (recur)." 

Answer 7

Claims that COVID-19 vaccines cause or increase the risk of breast cancer and other miscellaneous health issues have circulated for years since the start of the pandemic, often fueled by exaggerated or misleading information meant to create fear around vaccination. In this article from the American Cancer Society (https://www.cancer.org/cancer/managing-cancer/side-effects/infections/covid-19.html) detailing the connection between breast cancer and covid-19 vaccines, they explain that having breast cancer can hinder or weaken the effects of the covid vaccine, but it doesn’t say anything about the vaccine itself worsening or causing breast cancer. Another article from breastcancer.org (https://www.breastcancer.org/managing-life/staying-well-during-covid-19/vaccine-facts) states clearly that there is no link between the COVID-19 vaccines and breast cancer risk or developing breast cancer. Another source I found (https://biomarkerres.biomedcentral.com/articles/10.1186/s40364-025-00831-w) was from a large population-based study done in South Korea, aiming to find the correlation between the risks of various cancers and receiving the COVID19 vaccine (1 year post vaccine). In this study, the researchers observed higher risks of six cancers one year after vaccination. The lowest HR (hazard ratio) on this list was the correlation between the vaccine and an increased risk of developing breast cancer, having such a low ratio it was not at all statistically significant, and the authors themselves said this evidence does not prove causation, only possible associations, and would need further research to prove any of these claims to be true. When the evidence is examined as a whole, rather than through fear-based misinformation, it becomes clear that there is no credible scientific link between COVID-19 vaccines and breast cancer risk. The claim that these vaccines cause cancer is therefore false.