 The present study investigated the relationship between disaster exposure prior to pregnancy and maternal characteristics, gestational diabetes mellitus, GDM, and gestational weeks. The results showed that disaster exposure was associated with higher rates of hypertensive disorders of pregnancy, HDP, and lower gestational weeks. Additionally, pre-pregnancy body mass index, BMI, mediated 23.2% of the association between disaster exposure and HDP. This article was authored by Mami Ishikuro, Takuobara, Keiko Murakami, and others.