Sleep, light exposure at night, and psychological wellbeing during pregnancy.

Background: Psychological wellbeing during pregnancy is imperative for optimal maternal outcomes. The present study aimed to determine the association between sleep quality, light exposure at night, and psychological wellbeing in the 2 and 3 trimesters of pregnancy.

Methods: This prospective study was conducted in 9 randomly selected government maternity clinics in Kuala Lumpur, Malaysia.