 1. The Great East Japan earthquake, Gij, and resulting tsunami of March 11, 2011 caused devastating damage on the Pacific coast of the Tohoku region. 2. In response to this disaster, the Tohoku Medical Mega Bank Project, TMM, was launched to realize creative reconstruction and solve medical problems in the affected areas. 3. Two prospective cohort studies were started, a population-based adult cohort study, the TMM community-based cohort study, TMM-COM cohort study, which will recruit 80,000 participants, and a birth- and three-generation cohort study, the TMM birth- and three-generation cohort study, TMM birth-recohort study, which will recruit 70,000 participants. 4. The TMM-COM cohort study will recruit participants from 2013 to 2016 and follow them for at least five years, while the TMM birth-recohort study will recruit participants from 2013 to 2017 and follow them for at least four years. 5. For children, the TMM-O child health study was also started in November 2012 in Miyagi Prefecture. 6. An integrated biobank will be constructed based on the two prospective cohort studies, and TMM-O and IMM will investigate the chronic medical impacts of the G. This article was authored by Shinichi Kuriyama. Read our article.tv, links in the description below.