The short answer
In 2025 the FDA moved to ban Red Dye No. 3 from food. The ban was required by a law that bars any additive found to cause cancer in animals, after high levels caused cancer in male rats. The FDA has stated there is no evidence that Red No. 3 causes cancer in humans.
In 2025 the FDA moved to ban Red Dye No. 3 from food and ingested drugs.
The ban was triggered by a law about additives that cause cancer in animals.
High levels caused cancer in male rats through a hormonal mechanism that occurs in male rats.
The FDA says there is no evidence Red No. 3 causes cancer in humans.
Choose how you want to read this
The whole article, with every detail and caution.
The claim
After the FDA announced in January 2025 that it would revoke the use of Red Dye No. 3 (erythrosine) in food, many people concluded that artificial food dyes cause cancer. The move drew heavy news and social media coverage.
Why Red No. 3 was banned
The ban was required by the Delaney Clause. This U.S. law bars any food additive shown to cause cancer in people or animals, even if the human risk is unclear. Red No. 3 caused cancer in male laboratory rats exposed to high levels, through a hormonal mechanism that occurs in male rats. The FDA has stated that studies in other animals and in people did not show the same effect, and that there is no evidence Red No. 3 causes cancer in humans.
Makers have until January 15, 2027 to take the dye out of food, and until January 18, 2028 for medicines you swallow. Products made before those dates may stay on shelves for a while after.
What this means for other dyes
The Red No. 3 decision was driven by a specific law and a specific animal finding, not by proof that dyes cause human cancer. This page does not make any claim about other dyes. The FDA's Red No. 3 statements address only that dye.
The bottom line
The 2025 ban of Red No. 3 reflects a strict legal standard about animal studies. The FDA says there is no evidence that Red No. 3 causes cancer in humans. If you prefer to limit artificial dyes, that is a personal choice. Ask your care team if you have questions about your diet.
Sources
Common questions
Do food dyes cause cancer?
The FDA says there is no evidence Red No. 3 causes cancer in humans. Its ban was triggered by a law about animal studies, not proof of human risk.
Why was Red Dye No. 3 banned then?
A U.S. law bars additives shown to cause cancer in animals. High levels caused cancer in male rats through a hormonal mechanism that occurs in male rats.
What about other food dyes?
The Red No. 3 decision was specific to that dye and that law. This page does not make claims about other dyes.
Should I avoid artificial dyes?
That is a personal choice. The FDA says there is no evidence Red No. 3 causes cancer in humans. Ask your care team about your overall diet.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
Tap a question to save it to your list (kept on this device).
Your next step
What the evidence shows about common cancer claims.
Talk with a trained specialist or navigator
Cancer Explained provides educational guidance, but does not replace trained specialists, social workers, or your medical team.
Talk to a trained cancer information specialist
Free, confidential assistance from NCI Cancer Information Service via phone, chat, or email.
Contact your oncology team
Locate after-hours contact numbers, portal messages, or urgent triage phone lines.
Find a patient navigator
Get one-on-one help with appointments, logistics, translation, and care coordination.
Find a genetic counselor
Discuss inherited mutation risk, family history, and genetic testing options.
Find an oncology social worker
Access emotional counseling, family support groups, and mental health resources.
Find a financial navigator
Locate copay assistance foundations, grant programs, and lodging/travel support.
Find a clinical-trial specialist
Search matching studies and speak with NCI trial information specialists.
Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Sources last checked: 2026-07-13 what this meansLast updated: 2026-10-16Next planned review: 2027-01-13
Review details and limits
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status — Editorial review complete. This page completed Cancer Explained's editorial checks (sources, safety, plain language, duplication). It has not been reviewed by a physician or other healthcare professional.
General education. Low-risk educational or organizational content. Medical facts are cited to authoritative sources.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
Words to know
Tap any term to see what it means.
Knowledge check
0 of 3 answered
This self-assessment checks understanding of educational content only. It is not medical advice.
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Editorial review complete — This page completed Cancer Explained's editorial checks (sources, safety, plain language, duplication). It has not been reviewed by a physician or other healthcare professional.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
Read more about our editorial process, our use of AI, and our corrections policy.
Spotted a problem? Report an error — a factual mistake, broken or outdated source, confusing wording, or anything that seems unsafe. Please do not include names, medical record numbers, dates of birth, addresses, or other identifying medical information in your report.
After using this page, do you understand what to do next?
Anonymous — we only record the answer, never who gave it.