Sleep duration (24-hour) is associated with birth weight in nulliparous but not in multiparous women.

• 24-hour sleep duration decreased over pregnancy;• Parity status alters the association between sleep duration and birth weight;• Nulliparous women with greater decreases in sleep delivered newborns with lower BW.

Source: Nutrition - March 29, 2018 Category: Nutrition Authors: Ana Beatriz Franco-Sena, Linda G. Kahn, Dayana R. Farias, Aline A. Ferreira, Ilana Eshriqui, Amanda C.C. Figueiredo, Pam Factor-Litvak, Michael M. Schl üssel, Gilberto Kac Source Type: research