NEW DELHI: In the long list of health advisories for expectant mothers—nutrition, exercise, prenatal tests—sleep is often spoken about but rarely treated as central to mental health.
A recent study from Washington University in St. Louis has found that disrupted sleep during pregnancy and after childbirth is strongly linked with higher levels of anxiety and obsessive-compulsive symptoms in mothers. The findings add to a growing body of evidence suggesting that sleep is not merely restorative, but foundational to perinatal mental health.
“Sleep disruption is almost a universal experience in pregnancy and the postpartum period, but its mental health consequences are still underappreciated,” said Rebecca Cox, psychologist at Washington University and first author of the study published in Sleep. “Our findings suggest that shorter and poorer-quality sleep is a robust predictor of rising anxiety over time.”
The research team, which also included psychiatrist Mary Kimmel, surveyed around 230 women across early and late pregnancy and the postpartum period. Participants reported sleep duration, sleep quality, anxiety symptoms, and obsessive beliefs such as excessive worry about harm to the baby or a persistent need for mental control and perfection.
The study confirmed a pattern already observed in earlier research: sleep quality tends to decline in the third trimester, worsens further immediately after childbirth, and stabilises only later in the postpartum phase. However, what stood out was the direction of influence.
“Shorter sleep duration consistently preceded increases in anxiety symptoms,” the authors noted, suggesting that sleep disruption may be a driving factor rather than merely a consequence of anxiety.
This finding is particularly significant because it challenges a commonly held assumption that anxiety during pregnancy leads to sleep problems. Instead, the study indicates that poor sleep may come first, setting off a cascade of emotional and cognitive changes.
The participants were assessed for anxiety symptoms such as persistent worry about the baby’s safety, fear of harm, and intrusive thoughts. They were also evaluated for obsessive-compulsive tendencies, including perfectionism-related fears and heightened responsibility for preventing negative outcomes.
Higher levels of sleep disturbance were associated with both increased anxiety and stronger obsessive beliefs over time. Mothers who reported more fragmented sleep were more likely to experience escalating emotional distress during the perinatal period.
However, the study also identified an important moderating factor: coping ability. Women who reported stronger coping skills—defined as the perceived ability to manage stress and adapt to changing demands—were less affected by the negative emotional impact of poor sleep.
“Coping seems to act like a buffer,” said Dr. Cox. “When individuals feel more in control of their ability to handle stress, the same level of sleep disruption does not translate into the same intensity of anxiety.”
Interestingly, coping ability did not significantly influence obsessive-compulsive beliefs, suggesting that different psychological pathways may underlie anxiety and OCD-like symptoms during pregnancy.
Experts say the implications of the findings extend beyond maternal well-being. Sleep is increasingly recognised as a key factor influencing caregiving quality, emotional bonding, and infant regulation in early life.
When a mother is well-rested, she is more likely to respond calmly to infant cues, maintain emotional consistency, and engage in sensitive caregiving. In contrast, chronic sleep deprivation may contribute to irritability, emotional exhaustion, and difficulty in managing stress—factors that can indirectly affect infant sleep patterns and emotional development.
Neonatal and developmental researchers have long noted that early caregiver-infant interactions shape stress regulation systems in infants. While the Washington University study did not directly measure infant outcomes, the authors suggest that improving maternal sleep may have downstream benefits for early child development.
One of the key takeaways from the study is that sleep may be a modifiable risk factor in preventing or reducing perinatal anxiety. Unlike many biological or hormonal changes during pregnancy, sleep patterns can be influenced through behavioural, environmental, and clinical interventions.
Simple strategies—such as sleep hygiene education, stress reduction techniques, partner support for night-time caregiving, and early screening for sleep disturbances—could potentially reduce the burden of anxiety during and after pregnancy.
“The bottom line is that helping mothers sleep better may be one of the most practical ways to support mental health during this critical life stage,” said Dr. Kimmel, senior author of the study.
For more query kindly contact indiahealthbuddy@gmailcom
