NewsTrending topic
Does Skipping Vaccines Lower Your Cancer Risk? What an Instagram Post Gets Wrong
An Instagram post says a 'lifestyle hack' that cuts cancer risk is being vaccine-free. Two vaccines, HPV and hepatitis B, are proven to prevent cancers. And NCI says there is no evidence COVID-19 vaccines cause cancer.
Original commentary from the Cancer Explained editorial team.
Please note: this page is educational only — it is not medical advice, and it does not speculate about anyone’s health beyond reliable public reporting. For questions about your own health, talk with your healthcare team.
Nothing has loaded from Instagram. We do not connect you to Meta unless you ask, because that would let them set cookies through this page. Open it on Instagram instead.
An Instagram post from @ignore_science, posted around October 6, 2026, says: "Comment 'quacksine-free' for easy lifestyle hack that drastically reduces your cancer risk." The word "quacksine" is a put-down for vaccines. The post suggests that avoiding vaccines lowers cancer risk.
Is this satire?
It does not look like it. We could only view the account through a page-reading tool, so we may have missed context. What we saw: the bio says "I share missed information" and links to a Substack called "vaccines-are-the-new-smoking." Its highlights include topics such as "SV40 cancer," "SIDS" and "HPV." Comments on the post repeat anti-vaccine claims. We saw no jokes or disclaimers. We treat it as a sincere claim.
What's real
Not much. Lifestyle does matter for cancer risk. Not smoking, limiting alcohol and staying active all help. But the post offers no study, and it names no cancer. "Comment to get the secret" is a common way to collect followers.
What's missing or wrong
The claim leaves out that some vaccines prevent cancer. Some cancers are caused by infections. Vaccines stop those infections.
What the evidence says
HPV vaccine. The National Cancer Institute (NCI) says each year in the US there are over 47,900 new cancers in parts of the body where HPV is often found, and HPV causes about 37,800 of them. NCI says the vaccine is estimated to prevent up to 90% of cancers caused by HPV. The CDC says infections with the HPV types that cause most HPV cancers have dropped 88% in teen girls and 81% in young adult women since vaccination began. It also reports a 40% drop in cervical precancers caused by high-risk HPV types among vaccinated women. Those figures are about infections and precancers, which come years before cancer. CDC says protection has lasted at least about 12 years with no sign of fading. NCI says more than two decades of monitoring show no serious adverse effects. Common side effects are brief, such as a sore arm. Vaccinated women still need cervical screening.
Hepatitis B vaccine. The CDC says the best way to prevent hepatitis B is vaccination. Chronic hepatitis B infection can lead to liver cancer, so preventing the infection protects the liver. The CDC page we opened did not itself give a liver cancer figure. For that link, see our article on hepatitis B vaccination and liver cancer prevention. CDC calls the vaccine safe and says the most common side effect is soreness where the shot was given.
mRNA COVID-19 vaccines. NCI says: "There is no evidence that COVID-19 vaccines cause cancer, lead to recurrence, or lead to disease progression," and that they do not change your DNA. For the "turbo cancer" claim and the timing of rising early-onset cancers, see our earlier article.
Limits. No vaccine prevents every cancer. Most cancers have no vaccine. No vaccine is risk free, and rare side effects exist. We did not find any source showing that avoiding vaccines lowers cancer risk.
What to do with this
If you are unsure about a vaccine, ask your own doctor. Ask which vaccines are recommended for your age and health. This matters even more if you have cancer or a weak immune system. Some people on treatment need special timing, and some should avoid live vaccines. Ask your care team before any vaccine. Do not rely on a viral post.
If you have a fever of 100.4 F (38 C) or higher during cancer treatment, call your care team right away. For emergencies, call 911.
Sources
- Instagram post (@ignore_science): instagram.com
- Instagram account page (bio and highlights, read through a page-reading tool): instagram.com
- National Cancer Institute, "HPV Vaccine": cancer.gov
- National Cancer Institute, "HPV and Cancer": cancer.gov
- CDC, "HPV Vaccination": cdc.gov
- CDC, "Hepatitis B Vaccination": cdc.gov
- National Cancer Institute, "COVID-19 Vaccines and People with Cancer": cancer.gov
How this article was prepared
An AI-assisted editorial system helped prepare this page. It used NCI and CDC pages that we opened on October 13, 2026. A CDC HPV vaccine safety data page did not open (404), so we did not use it. No named medical reviewer has reviewed it unless one is listed.
Cancer Explained is published by the National Cancer Information Foundation. It is not medical advice and does not suggest a test or treatment.
See an error, old source, or unclear wording? Tell us.
Know someone who needs this?
Plenty of people are looking for something like this and do not know where to start. If this would help a friend or someone you love, send it on — we have written an opening line so you do not have to stare at an empty message. You can change every word of it.
Your message is written and sent in your own email or messaging app — we never see who you send it to, and nothing is added to any list.
Put the story in context
Prevention, possible warning signs, screening, and diagnosis
This story relates to general. The information below is general: it does not reveal anything else about a public person’s health, and not every point applies to every cancer. Personal advice depends on age, symptoms, family history, exposures, and medical history.
Prevention and risk reduction
Not every cancer can be prevented. Avoiding tobacco, protecting skin from ultraviolet radiation, limiting alcohol, staying active, and receiving recommended HPV or hepatitis B vaccination can lower the risk of certain cancers. A risk factor is not a prediction or a cause in one individual.
Symptoms and possible early signs
Possible signs vary and are often caused by conditions other than cancer. Changes worth discussing include a new lump, unexplained bleeding or weight loss, a persistent cough, lasting bowel or bladder changes, a changing skin spot, or symptoms that persist or worsen. Some early cancers cause no symptoms.
Screening and early detection
Screening looks for certain cancers before symptoms begin. Recommended tests exist only for some cancers and depend on age and risk. Screening can have benefits and harms; it is not the same as evaluating a new symptom, and there is no single routine scan or blood test that reliably screens for every cancer.
How cancer is diagnosed
Diagnosis may involve a history and exam, imaging, laboratory tests, and often a biopsy. Pathology can identify the cancer type and may test biomarkers that guide treatment. Symptoms, screening results, tumor markers, or online stories alone cannot confirm cancer.
Learn about this story’s cancer topic
A public story may encourage questions, but it should not be used to estimate your risk or choose testing. Contact a healthcare professional about a persistent or concerning change. Seek urgent care for severe or rapidly worsening symptoms.
Related Cancer Explained resources
Go deeper with NCI
Watch the short version
Under a minute, captioned, and sourced from federal health agencies.
Pressing play loads the video from YouTube’s privacy-enhanced player (youtube-nocookie.com). Nothing loads from YouTube before then. Educational only, not medical advice.