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the claim

Hiroshima survivors who received more than 2 gray of radiation showed a slight increase in the instances of cancer compared to a normal population.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 sources for · 0 against

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

Is it true that Hiroshima survivors who received more than 2 gray of radiation showed a slight increase in the instances of cancer compared to a normal population?

Yes. Long-term epidemiological studies of Hiroshima atomic bomb survivors demonstrate that radiation doses exceeding 2 gray are associated with an increased incidence of cancer.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

The analysis

The claim is specific and testable regarding the health effects of high-dose radiation on Hiroshima atomic bomb survivors. Multiple comprehensive reviews of survivor data (such as papers 0, 1, and 2) confirm that high radiation doses (above 2 Gy) significantly increase cancer incidence compared to unexposed populations, strongly supporting the claim without any refuting evidence.

Evidence for · 3
Eight decades of research on the long-term health effects of radiation in atomic bomb survivors and their offspring.
2025
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K, K., R, S., & P, R. (2025). Eight decades of research on the long-term health effects of radiation in atomic bomb survivors and their offspring.. doi.org. https://doi.org/10.1093/carcin/bgaf047

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More for · 2
Breast cancer incidence and mortality in population studies of radiation exposure: systematic review and meta-analysis.
2026
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E, C., CM, R., MP, L., E, Q., B, L., R, H., MT, G., B, F., T, B., T, S., & LB, Z. (2026). Breast cancer incidence and mortality in population studies of radiation exposure: systematic review and meta-analysis.. doi.org. https://doi.org/10.1038/s41416-026-03503-0

The importance of data from the atomic bomb survivors for international radiological protection.
2025
Get citation
R, W. & D, L. (2025). The importance of data from the atomic bomb survivors for international radiological protection.. doi.org. https://doi.org/10.1093/carcin/bgaf062

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