Dong JY, Ikehara S, Kimura T, et al. - Using the Japan Environment and Children's Study, researchers intended to determine if there is a prospective connection between breakfast consumption and the incidence of gestational diabetes mellitus (GDM). During the study enrollment (January 2011 to March 2014), a total of 103,099 pregnancies were registered, involving 97,454 pregnant women from 15 areas across Japan. Singleton pregnant women who were free of GDM, stroke, heart disease, cancer and type 1 or type 2 diabetes were eligible for review at the study enrollment. Among 84,669 pregnant women for analysis, 1,935 cases of GDM have been reported. In contrast with daily consumption, breakfast consumption < 3 times/wk before and during early pregnancy was correlated with increased chances of developing GDM.