Background: Approximately 235,000 military personnel participated at one of 230 U.S. atmospheric nuclear weapons tests from 1945 through 1962. At the Nevada Test Site (NTS), the atomic veterans participated in military maneuvers, observed nuclear weapons tests, or provided technical support. At the Pacific Proving Ground (PPG), they served aboard ships or were stationed on islands during or after nuclear weapons tests.
Material And Methods: Participants at seven test series, previously studied with high-quality dosimetry and personnel records, and the first test at TRINITY formed the cohort of 114,270 male military participants traced for vital status from 1945 through 2010. Dose reconstructions were based on Nuclear Test Personnel Review records, Department of Defense. Standardized mortality ratios (SMR) and Cox and Poisson regression models were used in the analysis.
Results: Most atomic veterans were enlisted men, served in the Navy at the PPG, and were born before 1930. Vital status was determined for 96.8% of the veterans; 60% had died. Enlisted men had significantly high all-causes mortality SMR (1.06); officers had significantly low all-causes mortality SMR (0.71). The pattern of risk over time showed a diminution of the 'healthy soldier effect': the all-causes mortality SMR after 50 years of follow-up was 1.00. The healthy soldier effect for all cancers also diminished over time. The all-cancer SMR was significantly high after 50 years (SMR 1.10) primarily from smoking-related cancers, attributed in part to the availability of cigarettes in military rations. The highest SMR was for mesothelioma (SMR 1.56) which was correlated with asbestos exposure in naval ships. Prostate cancer was significantly high (SMR 1.13). Ischemic heart disease was significantly low (SMR 0.84). Estimated mean doses varied by organ were low; e.g., the mean red bone marrow dose was 6 mGy (maximum 108 mGy). Internal cohort dose-response analyses provided no evidence for increasing trends with radiation dose for leukemia (excluding chronic lymphocytic leukemia (CLL)) [ERR (95% CI) per 100 mGy -0.37 (-1.08, 0.33); = 710], CLL, myelodysplastic syndrome, multiple myeloma, ischemic heart disease, or cancers of the lung, prostate, breast, and brain.
Conclusion: No statistically significant radiation associations were observed among 114,270 nuclear weapons test participants followed for up to 65 years. The 95% confidence limits were narrow and excluded mortality risks per unit dose that are two to four times higher than those reported in other investigations. Significantly elevated SMRs were seen for mesothelioma and asbestosis, attributed to asbestos exposure aboard ships.
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http://dx.doi.org/10.1080/09553002.2020.1787543 | DOI Listing |
Health Secur
December 2024
Jenna Mandel-Ricci, MPA, MPH, is Chief of Staff; both at the New York City Department of Health and Mental Hygiene, Long Island City, NY.
The New York City Department of Health and Mental Hygiene and the Greater New York Hospital Association held 3 workshops and 2 follow-up meetings with hospital emergency managers and colleagues to determine hospitals' response actions to a scenario of a 10-kiloton improvised nuclear device detonation. The scenario incorporated 3 zones of damage (moderate, light, and beyond damage zones) and covered the period of 0 to 72 hours postdetonation divided into 3 24-hour operational periods. The Joint Commission's critical emergency areas were used to determine the objectives and response actions that would be initiated.
View Article and Find Full Text PDFJ Environ Radioact
December 2024
Graduate School of Human Environment, Osaka Sangyo University, Osaka, 5748530, Japan.
Tritium, a radioactive isotope produced naturally through cosmic radiation interactions and anthropogenically through nuclear weapons testing, poses potential environmental risks, particularly within the water cycle. This study measured tritium concentrations in surface water across Thailand to establish a baseline dataset for monitoring potential contamination from nuclear activities and accidents. Surface water samples were collected from 14 large reservoirs during the wet season in October 2023 and the dry season in February 2024, providing a total of 28 samples.
View Article and Find Full Text PDFJ Radiat Res
December 2024
Department of Hematology, Atomic Bomb Disease and Hibakusha Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan.
Epidemiological studies for atomic bomb (A-bomb) survivors clearly demonstrated that A-bomb radiation increased the risk of hematological neoplasms, such as acute and chronic leukemia, and myelodysplastic syndromes (MDS) among survivors. Several studies on MDS among survivors investigated its characteristics, and it seems that MDS among survivors has different features from those seen in de novo MDS and therapy-related MDS. In this short review, we describe the differences of clinical features, chromosomal alterations and genome aberrations among them.
View Article and Find Full Text PDFInt J Radiat Biol
December 2024
Nuclear Engineering Graduate Program, Military Institute of Engineering (IME), Rio de Janeiro, Brazil.
Purpose: This study focuses on analytical computer simulations performed to investigate a hypothetical event where the activation of a radiological dispersion device (RDD) triggers a crisis.
Materials And Methods: The methodology presents steps centered on the initial evaluation phase of the event (initial 100 hours), aiming to evaluate the radiological risks regarding the development of leukemia. Local environmental changes, sex, and age were also used to assess risks.
Drug Test Anal
December 2024
Faculty of Military Technology, University of Defence, Brno, Czech Republic.
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