About Birth Cohorts Japan

Collaborations of birth cohorts are very popular in European and North American countries, whereas those are lagged in Japan. This Japanese birth cohort database contains all information of the registered birth cohorts: the names and abbreviations of the registered birth cohorts, information on the website, main literature, principal investigator, and contact individual; the number, breakdown, start date, end date, and registration criteria of participants; and basic information, such as the age of the subjects at the end of tracking. In addition, a questionnaire survey of children, mothers, and fathers; registration data; and a list of timings for collecting biological samples are presented. This database allows you to view the current status of the Japanese birth cohorts.

Please use this database of Japanese birth cohorts to conduct individual collaborative studies with other birth cohorts; to conduct meta-analyses in multiple birth cohort studies; and to perform genome-wide association studies, epigenome-related studies, and Mendelian randomization, among others. Thus, it is intended to be used to promote the establishment of birth cohort networks and consortia.

If you have not yet registered your birth cohort, please register with the Japanese birth cohort database and work together to develop the Japanese birth cohort collaboration and disseminate Japanese evidence to the world.


This website of Japanese birth cohorts contains information provided by each birth cohort. We try to ensure that the website is entirely up to date, and in cooperation with the principal investigators of the Japanese birth cohorts, we strive to ensure the accuracy of all the information on the website. However, inconsistencies and errors may still exist.

Our website takes no responsibility for mistakes, inaccuracies, or inconsistencies in the data presented in the inventory or for the results of using these data. We shall not be liable for any losses, claims, proceedings, demands, costs, and other liabilities caused directly or indirectly in connection with the use of the data.