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The claim

Hormones injected into cows linked to human cancer risk

Rating

FALSE! There is no conclusive scientific evidence to support this

Reviewed by First Check ↗ ·

Original fact check ↗

PeakMetrics research summary

Based on related reporting.

Research from related reporting describes claims that milk from cows injected with genetically engineered growth hormone had higher levels of IGF-1, which it says is linked to human breast, colon and prostate cancers. This excerpt does not establish that the evidence for a human cancer risk is conclusive.[S1]

Research date:

Sources and attribution

  1. [original] First Check original review

    Original review · Retrieved October 16, 2026

  2. [S1] The Truth About GMOs - Mother Earth Living

    Additional research · Retrieved October 16, 2026