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What science says

What does science say about Iodine (Lugol) and Childhood cancers?

  • We don’t say yes or no. We show what has been studied.
  • Working in a lab or in animals does not mean it works in people.
  • Don’t stop or change your treatment without talking to your doctor.

What has been studied

  1. Lab studies (cells)Tests on cells in a dish.Source: PubMed · as of 11 Nov 2026 · Open the search at PubMed5studies
  2. Animal studiesTests in mice, rats or other animals.Source: PubMed · as of 11 Nov 2026 · Open the search at PubMed17studies
  3. Studies in peoplePublished studies with human participants.Source: PubMed · as of 11 Nov 2026 · Open the search at PubMed551studies
  4. Registered trials in peopleTrials entered in a public registry, whatever their result.ClinicalTrials.gov: 11 · as of 11 Nov 2026 · Open the search at ClinicalTrials.govEU CTIS: 0 · as of 11 Nov 2026 · Open the search at EU CTISBy phase:Phase 2 (3)No phase (3)Phase 1 (2)Phase 2/3 (2)Phase 3 (1)By status:Completed (5)Recruiting (3)Running, not recruiting (2)Not yet recruiting (1)Countries (6):United States (6)Canada (1)China (1)France (1)United Kingdom (1)Puerto Rico (1)With a linked publication (results): 1 of 11The registries do not tell us here whether results were posted; a linked publication is shown instead.11trials
  5. Approved treatmentApproved by a medicines regulator for this disease.No

Source: PubMed, ClinicalTrials.gov, EU CTIS · as of 11 Nov 2026

Examples of what we found

The trials

Thinking of paying for it? Read this first

  • Ask for published results. Stories, thank-you letters and "patients report" are not results. Ask where the results were published.
  • Know what you pay for. Ask in writing: what exactly is included, who gets the money, and what happens if you stop.
  • Ask your own doctor first. Some products interfere with chemotherapy, radiation or other medicines. Your treating doctor can check this.
  • Do not stop standard treatment for it. Do not stop or delay your treatment without talking to your care team.

Before you pay for a treatment

Other treatments people ask about

Not medical advice. Talk to the care team before changing treatment.

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Under construction, not live – What does science say about Iodine (Lugol) and Childhood cancers? – Frontlight Research