Cancer is caused by vitamin B17 deficiency

the verdict

REFUTED

the evidence says no

Recorded sources

0 sources for · 4 against

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

Multiple reliable fact-checks and reference sources explicitly refute the claim that cancer is caused by a vitamin B17 deficiency.

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 · 4

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

Source citation format

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More against · 3

Snopes.com: Is Cancer Caused by a Deficiency of 'Vitamin B17'?

Recorded source metadata

Snopes.com: Is Cancer Caused by a Deficiency of 'Vitamin B17'?. Snopes.com. https://www.snopes.com/fact-check/cancer-vitamin-b17-deficiency/

Fact-checker ruling: False

Source citation format

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

Source citation format

Wikipedia: Cancer

Recorded source metadata

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

Reference article covering this claim directly

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → REFUTED · 001 Aug 2026

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