Research Article Summary
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The study projects the lifetime number of radiation-related excess cancer cases among 581,489 residents of New Mexico exposed to radioactive fallout from the 1945 Trinity nuclear test, using reconstructed tissue-specific radiation doses applied to baseline cancer rates and risk coefficients.
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Estimated lifetime baseline solid cancer cases (excluding thyroid and non-melanoma skin cancer) from 1945 to 2034 totaled about 183,000, with excess cancer estimates incorporating uncertainty intervals based on dose reconstruction and risk modeling.
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The projected 90% uncertainty intervals (UIs) for excess cancer cases were approximately 210–460 for all solid cancers, 80–530 for thyroid cancer, and 0–10 for leukemia, with corresponding attributable fractions varying by cancer type.
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Geographic variation was evident: in counties with the greatest fallout deposition (e.g., Guadalupe, Lincoln, San Miguel, Socorro, Torrance), the projected thyroid cancer attributable fraction ranged from about 17% to 58%, reflecting spatial heterogeneity in exposure.
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The authors emphasize that most cancers occurring or projected among this population are likely unrelated to Trinity fallout exposure, and substantial uncertainty in dose estimation and risk transfer methods limits the precision of risk projections.