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the claim

Vitamin B17 can cure cancer

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 7 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Scientific studies and independent fact-checkers have repeatedly shown that vitamin B17 (amygdalin or laetrile) is not a true vitamin, is ineffective at treating cancer, and can cause dangerous cyanide poisoning.

How claims like this are judged

Judged against fact-checker rulings and reference works: claims of this kind are settled by the fact-checking record, not journal abstracts.

Evidence against · 7
AFP Fact Check: Oncologists dismiss online posts touting grains as 'cancer cure'
Recorded source metadata

AFP Fact Check: Oncologists dismiss online posts touting grains as 'cancer cure'. AFP Fact Check. https://factcheck.afp.com/doc.afp.com.36EU9Q4

Fact-checker ruling: False

See more details
More against · 6
AAP: Cancer patients warned against toxic 'vitamin B17' miracle cure
Recorded source metadata

AAP: Cancer patients warned against toxic 'vitamin B17' miracle cure. AAP. https://www.aap.com.au/factcheck/cancer-patients-warned-against-toxic-vitamin-b17-miracle-cure/

Fact-checker ruling: False. Research has repeatedly shown B17 to be ineffective as a human cancer treatment.

Africa Check: 'Vitamin B17' in apple seeds doesn't cure cancer – and isn't a vitamin
Recorded source metadata

Africa Check: 'Vitamin B17' in apple seeds doesn't cure cancer – and isn't a vitamin. Africa Check. https://africacheck.org/fact-checks/meta-programme-fact-checks/vitamin-b17-apple-seeds-doesnt-cure-cancer-and-isnt-vitamin

Fact-checker ruling: Incorrect

vishvasnews.com: Fact check: Video claiming vitamin B17 deficiency causes cancer ...
Recorded source metadata

vishvasnews.com: Fact check: Video claiming vitamin B17 deficiency causes cancer .... vishvasnews.com. https://www.vishvasnews.com/english/viral/fact-check-video-claiming-vitamin-b17-deficiency-causes-cancer-consuming-grapes-will-cure-cancer-is-misleading/

Fact-checker ruling: Half true

Wikipedia: Amygdalin
Recorded source metadata

Wikipedia: Amygdalin. Wikipedia. https://en.wikipedia.org/wiki/Amygdalin

Reference article covering this claim directly

fullfact.org: ‘Vitamin B17’ from apricot seeds does not cure cancer – Full Fact
Recorded source metadata

fullfact.org: ‘Vitamin B17’ from apricot seeds does not cure cancer – Full Fact. fullfact.org. https://fullfact.org/health/vitamin-B17-cancer/

Fact-checker ruling: reviewed

pubmed.ncbi.nlm.nih.gov: 'Vitamin B17': Killing more than cancer
Recorded source metadata

pubmed.ncbi.nlm.nih.gov: 'Vitamin B17': Killing more than cancer. pubmed.ncbi.nlm.nih.gov. https://pubmed.ncbi.nlm.nih.gov/38807508/

Notes that using vitamin B17 for cancer therapy leads to risks of cyanide poisoning rather than valid treatment.

The paper trail · every fact has a biography
first checked01 Aug 2026
judged → REFUTED · 001 Aug 2026
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