Life Span Study (LSS)
Cohorts of atomic bomb survivors, including those exposed in utero and children conceived after parental exposure, were established to investigate the late health effects of atomic bomb radiation in Japan and its transgenerational effects. The LSS (the cohort of survivors) consists of about 120,000 subjects who have been followed since 1950. The cohort consists of residents of Hiroshima and Nagasaki, identified through the national census in 1950, including 94,000 atomic-bomb survivors and 27,000 unexposed individuals.
Study design
Cohort
Number of participants at first data collection
120,321 (participants)
Age at first data collection
Varied (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
The general population of Hiroshima and Nagasaki, Japan.
Sample features
Country
Year of first data collection
1950
Primary Institutions
Radiation Effects Research Foundation (放射線影響研究所, RERF)
Profile paper DOI
Funders
Department of Energy (DOE)
Ministry of Health, Labor and Welfare (厚生労働省, MHLW)
National Academy of Sciences (NAS)
Ongoing?
Yes
Data types collected
- Interview – face-to-face
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- None
- None
- Healthcare data
- Mortality data
Engagement
Keywords
Consortia and dataset groups
