Since its inception, UNSCEAR assesses and reports levels and effects of exposure to ionizing radiation. These reports are highly regarded as principal sources of authoritative and factual information.
For reproducing UNSCEAR material please contact the UNSCEAR secretariat using this permission request form (MSWord).
The UNSCEAR 2020/2021 Report Volume I is comprised of the main text of the 2021 report to the General Assembly (A/76/46) and one scientific annex.
| Annex A: Evaluation of medical exposure to ionizing radiation |
The UNSCEAR 2020/2021 Report Volume II is comprised of one scientific annex, available in English and Japanese language.
| Annex B: Levels and effects of radiation exposure due to the accident at the Fukushima Daiichi Nuclear Power Station: implications of information published since the UNSCEAR 2013 Report |
| 科学的附属書 B：福島第一原子力発電所における事故による放射線被ばくのレベルと影響：UNSCEAR2013 年報告書刊行後に発表された情報の影響 |
The UNSCEAR 2020/2021 Report Volume IV is comprised of one scientific annex.
| Annex D - Evaluation of occupational exposure to ionizing radiation |
The UNSCEAR 2019 Report is comprised of the main text of the 2019 report to the General Assembly (A/74/46) and two scientific annexes.
| Annex A: Evaluation of selected health effects and inference of risk due to radiation exposure |
| Annex B: Lung cancer from exposure to radon |
The UNSCEAR 2017 Report is comprised the main text of the 2017 report to the General Assembly (A/72/46) and two scientific annexes.
| Annex A: Principles and criteria for ensuring the quality of the Committee's reviews of epidemiological studies of radiation exposure |
| Annex B: Epidemiological studies of cancer risk due to low-dose-rate radiation from environmental sources |
The UNSCEAR 2016 Report is comprised of the main text of the 2016 report to the General Assembly (A/71/46 and Corr.1) and four scientific annexes.
| Annex A: Methodology for estimating public exposures due to radioactive discharges |
| Annex B: Radiation exposures from electricity generation |
| Annex C: Biological effects of selected internal emitters-Tritium |
| Annex D: Biological effects of selected internal emitters-Uranium |
The UNSCEAR 2013 Report Volume I is comprised of the main text of the 2013 Report to the General Assembly (A/68/46) and one scientific annex, available in English and Japanese language.
| Annex A: Levels and effects of radiation exposure due to the nuclear accident after the 2011 great east-Japan earthquake and tsunami |
| 附属書Ａ: 2011 年東日本大震災後の原子力事故による放射線被ばくのレベルと影響 |
The UNSCEAR 2013 Report Volume II is comprised of one scientific annex.
| Annex B: Effects of radiation exposure of children |
The UNSCEAR 2012 Report is comprised of the main text of the 2012 report to the General Assembly (A/67/46) and two scientific annexes.
| Annex A: Attributing health effects to ionizing radiation exposure and inferring risks |
| Annex B: Uncertainties in risk estimates for radiation-induced cancer |
The UNSCEAR 2010 Report is comprised of the main text of the 2010 report to the General Assembly (A/65/46) and a scientific report, available in all six UN languages.
The UNSCEAR 2008 Report Volume I is comprised of the main text of the 2008 report to the General Assembly (A/63/46) and two scientific annexes.
| Annex A: Medical radiation exposures |
| Annex B: Exposures of the public and workers from various sources of radiation |
The UNSCEAR 2008 Report Volume II is comprised of the remaining three scientific annexes.
| Annex C: Radiation exposures in accidents |
| Annex D: Health effects due to radiation from the Chernobyl accident |
| Annex E: Effects of ionizing radiation on non-human biota |
The UNSCEAR 2006 Report Volume I is comprised of the main text of the 2006 report to the General Assembly (A/61/46 and Corr) and two scientific annexes.
| Annex A: Epidemiological studies of radiation and cancer |
| Annex B: Epidemiological evaluation of cardiovascular disease and other non-cancer diseases following radiation exposure |
The UNSCEAR 2006 Report Volume II is comprised of the remaining three scientific annexes.
| Annex C: Non-targeted and delayed effects of exposure to ionizing radiation |
| Annex D: Effects of ionizing radiation on the immune system |
| Annex E: Sources-to-effects assessment for radon in homes and workplaces |
The UNSCEAR 2001 Report is comprised of the main text of the 2001 report to the General Assembly (A/56/46) and one scientific annex.
| Annex: Hereditary effects of radiation |
The UNSCEAR 2000 Report Volume I is comprised of the main text of the 2000 report to the General Assembly (A/55/46) and five scientific annexes.
| Annex A: Dose assessment methodologies |
| Annex B: Exposures from natural radiation sources |
| Annex C: Exposures from man-made sources of radiation |
| Annex D: Medical radiation exposures |
| Annex E: Occupational radiation exposures |
The UNSCEAR 2000 Report Volume II is comprised of the remaining five scientific annexes.
| Annex F: DNA repair and mutagenesis |
| Annex G: Biological effects at low radiation doses |
| Annex H: Combined effects of radiation and other agents |
| Annex I: Epidemiological evaluation of radiation-induced cancer |
| Annex J: Exposures and effects of the Chernobyl accident |
The UNSCEAR 1996 Report is comprised of the main text of the 1996 report to the General Assembly (A/51/46) and one scientific annex.
| Annex: Effects of radiation on the environment |
The UNSCEAR 1994 Report is comprised of the main text of the 1994 report to the General Assembly (A/49/46) and two scientific annexes.
| Annex A: Epidemiological studies of radiation carcinogenesis |
| Annex B: Adaptive responses to radiation in cells and organisms |
The UNSCEAR 1993 Report is comprised of the main text of the 1994 report to the General Assembly (A/48/46) and nine scientific annexes.
| Annex A: Exposures from natural sources of radiation |
| Annex B: Exposures from man-made sources of radiation |
| Annex C: Medical radiation exposures |
| Annex D: Occupational radiation exposures |
| Annex E: Mechanisms of radiation oncogenesis |
| Annex F: Influence of dose and dose rate on stochastic effects of radiation |
| Annex G: Hereditary effects of radiation |
| Annex H: Radiation effects of the developing human brain |
| Annex I: Late deterministic effects in children |
The UNSCEAR 1988 Report is comprised of the main text of the 1988 report to the General Assembly (A/43/45) and seven scientific annexes.
| Annex A: Exposures from natural sources of radiation |
| Annex B: Exposures from nuclear power production |
| Annex C: Exposures from medical uses of radiation |
| Annex D: Exposures from the Chernobyl accident |
| Annex E: Genetic hazards |
| Annex F: Radiation carcinogenesis in man |
| Annex G: Early effects in man of high doses of radiation and Appendix: Acute radiation effects in victims of the Chernobyl nuclear power plant accident |
The UNSCEAR 1986 Report is comprised of the main text of the 1986 report to the General Assembly (A/41/16) and three scientific annexes.
| Annex A: Genetic effects of radiation |
| Annex B: Dose-response relationships for radiation-induced cancer |
| Annex C: Biological effects of pre-natal irradiation |
The UNSCEAR 1982 Report is comprised of the main text of the 1982 report to the General Assembly (A/37/45) and twelve scientific annexes.
| Annex A: Dose assessment models |
| Annex B: Exposures to natural radiation sources |
| Annex C: Technologically modified exposures to natural radiation |
| Annex D: Exposures to radon and thoron and their decay products |
| Annex E: Exposures resulting from nuclear explosions |
| Annex F: Exposures resulting from nuclear power production |
| Annex G: Medical exposures |
| Annex H: Occupational exposures |
| Annex I: Genetic effects of radiation |
| Annex J: Non-stochastic effects of irradiation |
| Annex K: Radiation-induced life shortening |
| Annex L: Biological effects of radiation in combination with other physical, chemical or biological agents |
The UNSCEAR 1977 Report is comprised of the main text of the 1977 report to the General Assembly (A/32/40) and ten scientific annexes.
| Annex A: Concepts and quantities in the assessment of human exposures |
| Annex B: Natural sources of radiation |
| Annex C: Radioactive contamination due to nuclear explosions |
| Annex D: Radioactive contamination due to nuclear power production |
| Annex E: Doses from occupational exposure |
| Annex F: Medical irradiation |
| Annex G: Radiation carcinogenesis in man |
| Annex H: Genetic effects of radiation |
| Annex I: Experimental radiation carcinogenesis |
| Annex J: Developmental effects of irradiation in utero |
The UNSCEAR 1972 Report Volume I is comprised of the main text of the 1972 report to the General Assembly (A/8725) and four scientific annexes.
| Annex A: Environmental radiation |
| Annex B: Doses from medical irradiation |
| Annex C: Doses from occupational exposure |
| Annex D: Miscellaneous sources of ionizing radiation |
The UNSCEAR 1972 Report Volume II is comprised of the remaining five scientific annexes.
| Annex E: Genetic effects of ionizing radiation |
| Annex F: Effects of radiation on the immune response |
| Annex G: Experimental induction of neoplasms by radiation |
| Annex H: Radiation carcinogenesis in man |
The UNSCEAR 1969 Report is comprised of the main text of the 1969 report to the General Assembly (A/7613 + Corr.) and five scientific annexes.
| Annex A: Radioactive contamination of the environment by nuclear tests |
| Annex B: Effects of ionizing radiation on the nervous system |
| Annex C: Radiation-induced chromosome aberrations in human cells |
| Annex D: Lists of reports received by the Committee |
The UNSCEAR 1966 Report is comprised of the main text of the 1966 report to the General Assembly (A/6314 + Corr.) and four scientific annexes.
| Annex A: Radiation from natural sources |
| Annex B: Environmental contamination |
| Annex C: The genetic risks of ionizing radiation |
| Annex D: Lists of reports received by the Committee |
The UNSCEAR 1964 Report is comprised of the main text of the 1964 report to the General Assembly (A/5814) and three scientific annexes.
| Annex A: Radioactive contamination of the environment by nuclear tests |
| Annex B: Radiation carcinogenesis in man |
| Annex C: List of reports received by the Committee |
The UNSCEAR 1962 Report is comprised of the main text of the 1962 report to the General Assembly (A/5216) and eleven scientific annexes.
| Annex A: Definition of quantities, units and symbols |
| Annex B: Fundamental radiobiology |
| Annex C: The hereditary effects of radiation |
| Annex D: Somatic effects of radiation ( References) |
| Annex E: Radiation from natural sources |
| Annex F: Environmental contamination |
| Annex G: Medical, occupational and other exposures |
| Annex H: Comparison of doses and estimates of risks |
| Annex I: List of offers to assist with measurements of samples |
| Annex J: List of reports submitted to the Committee |
| Annex K: Letter sent at the request of the Committee by its Secretary to States Members of the United Nations and members of the specialized agencies and of the IAEA on 7 April 1960 |
The UNSCEAR 1958 Report is comprised the main text of the 1958 report to the General Assembly (A/3838 + Corr.) and nine scientific annexes.
| Annex A: Definitions of quantities, units and symbols |
| Annex B: Radiation from natural sources |
| Annex C: Man-made sources (other than environmental contamination) |
| Annex D: Environmental contamination |
| Annex E: Methods of measurement |
| Annex F: Fundamental radiobiology |
| Annex G: Mammalian somatic effects |
| Annex H: The genetic effects of radiation |
| Annex I: List of reports submitted to the Committee |
