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What was claimed

LEUKEMIA is the #1 cancer in children. Formaldehyde is a known CAUSE of leukemia (IARC). Yet the FDA, CDC & vaccine makers boast it’s a SAFE ingredient in vaccines.

Our verdict

Needs caution

This is a loaded characterization, not a verifiable factual claim as written. The supplied sources do not document any FDA or CDC 'boast,' so the wording overstates and reframes an unverified safety assertion. The provided sources do not include an IARC statement showing formaldehyde is a proven cause of leukemia. Without the cited IARC evidence in the results, this cannot be confirmed from the supplied material. (Only 1 of 3 AI systems responded.)

1 AI system responded29 sources citedChecked Sep 26, 2026

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Key findings

The FDA, CDC and vaccine makers boast it is a SAFE ingredient in vaccines.

Misleading78%
1 AI checked

Formaldehyde is a known CAUSE of leukemia (IARC).

Can’t verify62%
1 AI checked

Leukemia is the #1 cancer in children.

Verified98%
1 AI checked

Verified against 29 sources

seer.cancer.govcincinnatichildrens.orgchop.edupmc.ncbi.nlm.nih.govpmc.ncbi.nlm.nih.govcancer.orgepa.govpmc.ncbi.nlm.nih.govfrontiersin.orgtandfonline.comcancer.govbloodcancerunited.orgpmc.ncbi.nlm.nih.govcdc.govpmc.ncbi.nlm.nih.govncbi.nlm.nih.govcancer.govpmc.ncbi.nlm.nih.govstacks.cdc.govprameyanews.comdemocrata.escdc.govcdc.govsciencedaily.comcnn.comajmc.comsciencedaily.comsciencedaily.comnews-medical.net

Detailed Analysis

The response mixes one accurate statement with two unsupported or misleading claims. Leukemia is indeed the most common childhood cancer, but the claim that formaldehyde is a proven cause of leukemia is not established by the supplied sources, and the vaccine safety claim is an unsupported rhetorical conclusion rather than a verified fact.

Why this verdict

  • The response mixes one accurate statement with two unsupported or misleading claims.
  • Leukemia is indeed the most common childhood cancer, but the claim that formaldehyde is a proven cause of leukemia is not established by the supplied sources, and the vaccine safety claim is an unsupported rhetorical conclusion rather than a verified fact.

Claims checked

The FDA, CDC and vaccine makers boast it is a SAFE ingredient in vaccines.

Misleading78%
This is a loaded characterization, not a verifiable factual claim as written. The supplied sources do not document any FDA or CDC 'boast,' so the wording overstates and reframes an unverified safety assertion.

This claim may mislead readers without added context.

Formaldehyde is a known CAUSE of leukemia (IARC).

Can’t verify62%
The provided sources do not include an IARC statement showing formaldehyde is a proven cause of leukemia. Without the cited IARC evidence in the results, this cannot be confirmed from the supplied material.

Leukemia is the #1 cancer in children.

Verified98%
Multiple sources say leukemia is the most common childhood cancer and account for about 30% of childhood cancers.[2] [3] [6] [7]

What other AI think

ClaudeDid not respond
ChatGPTDid not respond

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