Michiko Yamada


Department of Clinical Studies
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Dr. Yamada has been engaged in a long-term continuous cohort study of A-bomb survivors and their children at RERF as a physician/research scientist since 1983. An important task is to collect standardized clinical and epidemiological information through health examinations. RERF’s cohort study is one of the largest, longest-running cohort studies in the world. Her primary research interest is radiation effects on morbidity and laboratory measurements. She is also involved in background analysis of age-related diseases, including an international collaborative study of dementia to determine the prevalence and incidence of dementia among Japanese people living in Hiroshima and people of Japanese descent living in Honolulu and Seattle. She has published papers on longitudinal analyses of measurements such as cholesterol, hemoglobin, and cognitive function, which have yielded interesting results.


Ph.D. (Medical science) Hiroshima University
M.D. School of Medicine, Hiroshima University


Radiation Effects Research Foundation, Department of Clinical Studies
  • 2014-

    Chief, Division of Radiology

  • 2005-2011

    Assistant Department Chief

  • 2004-2014

    Chief, Division of Health Examination

  • 1998-

    Senior Scientist

  • 1998-2004

    Chief, Division of Radiology

  • 1994-1998

    Associate Senior Scientist

  • 1983-1994

    Research Scientist

Selected publications

Yamada M, Furukawa K, Tatsukawa Y, Marumo K, Funamoto S, Sakata R, Ozasa K, Cullings HM, Preston DL, and Kurttio P. Congenital Malformations and Perinatal Deaths among the Children of Atomic Bomb Survivors: A Reappraisal. Am J Epidemiol. 2021; 190: 2323-33.
Yamada M, Kato N, Kitamura H, Ishihara K, Hida A. Cognitive function among elderly survivors prenatally exposed to atomic bombings. Am J Med. 2021; 134(4): e264-e7.
Yamada M, Landes RD, Mimori Y, Nagano Y, Sasaki H. Radiation effects on cognitive function among atomic bomb survivors exposed at or after adolescence. Am J Med. 2016; 129: 586-91.
Yamada M, Landes RD, Mimori Y, Nagano Y, Sasaki H. Trajectories of cognitive function in dementia-free subjects: Radiation Effects Research Foundation Adult Health Study. J Neurol Sci. 2015; 351: 115-9.
Yamada M, Shimizu M, Kasagi F, Sasaki H. Reaction time as a predictor of mortality: The Radiation Effects Research Foundation Adult Health Study. Psychosom Med. 2013; 75: 154-60.
Yamada M, Kasagi F, Mimori Y, Miyachi T, Ohshita T, Sasaki H. Incidence of dementia among atomic bomb survivors – Radiation Effects Research Foundation Adult Health Study. J Neurol Sci. 2009; 281: 11-4.
Yamada M, Mimori Y, Kasagi F, Miyachi T, Ohshita T, Sudoh S, Ikeda J, Matsui K, Nakamura S, Matsumoto M, Fujiwara S, Sasaki H. Incidence of dementia, Alzheimer’s disease, and vascular dementia in a Japanese population: Radiation Effects Research Foundation Adult Health Study. Neuroepidemiology. 2008; 30: 152-60.
Wong FL, Yamada M, Tominaga T, Fujiwara S, Suzuki G. Effects of radiation on the longitudinal trends of hemoglobin levels in the Japanese Atomic-bomb survivors. Radiat Res. 2005; 164; 820-7.
Yamada M, Wong FL, Fujiwara S, Akahoshi M, Suzuki G. Noncancer disease incidence in the atomic bomb survivors. 1958-1998. Radiat Res. 2004; 161: 622-32.
Yamada M, Kasagi F, Sasaki H, Masunari N, Mimori Y, Suzuki G. Association between dementia and midlife risk factors: The RERF Adult Health Study. J Am Geriatr Soc. 2003; 51: 410-4.