Postpartum depression has long been recognized as a serious challenge for new parents. But researchers say anxiety, often more prevalent, deserves equal attention. A new study from Washington University in St. Louis, published in Sleep, highlights how disrupted Sleep during pregnancy and after childbirth can fuel anxiety and obsessive‑compulsive disorder (OCD) symptoms.
Surveying about 230 women across pregnancy and postpartum, the team found that shorter sleep duration consistently predicted higher levels of perinatal anxiety.
“Getting a full night’s sleep can be difficult during this time,” said Rebecca Cox, PhD, first author and assistant professor of psychological and brain sciences. Hormonal changes, physical discomfort, and stress all contribute to restless nights.
The study confirmed earlier findings. Sleep problems peak in the third trimester, worsen in the early postpartum period, and stabilize later. However, the new data show that sleep loss comes before anxiety symptoms, not the other way around.
Women with more disturbed sleep reported higher anxiety, especially if they had less confidence in their ability to cope. Coping ability did not change the connection between sleep and obsessive beliefs.
Senior author Mary Kimmel, MD, PhD, a psychiatrist at WashU Medicine, and Cox emphasized the clinical implications. Shorter sleep duration emerged as a ‘robust longitudinal predictor of perinatal anxiety,’ suggesting that interventions targeting Sleep could improve maternal mental health.
“The bottom line,” Cox said, “is that trying to prioritize mom’s sleep may have benefits for her mental health.”
The findings underscore a simple but often overlooked truth: in the fragile months of pregnancy and the postpartum period, Sleep is not just rest; it is a cornerstone of resilience.
