Zhai Z, Liu X, Zhang H, et al. - Utilizing the baseline data of the Henan Rural Cohort Study, researchers sought to examine the independent and combined impacts of midpoint of sleep and night sleep duration on type 2 diabetes mellitus (T2DM) in areas with limited resources. The sample consisted of 37,276 candidates (14,456 men and 22,820 women). The Pittsburgh Sleep Quality Index was used to evaluate sleep data. T2DM affected 3,580 of the 37,276 individuals who took part in the study. Late and early midpoint of sleep, as well as long night sleep duration, were all linked to a higher prevalence of T2DM. Meanwhile, the midpoint of sleep and the duration of night sleep may have combined effects on the prevalence of T2DM, which has potential health implications for T2DM prevention, particularly in rural women.