Sep 27, 2026
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Studies from the University of British Columbia suggest that intrusive thoughts of harming an infant are common and typically do not indicate a risk of physical aggression.

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ManyPress Editorial

3 min readSource:Medical Xpress
Research Finds Unwanted Intrusive Thoughts Common Among New Parents

Key facts

  • •99% of new birthing parents report unwanted, intrusive thoughts about accidental harm coming to their newborn.
  • •Approximately 50% of new parents experience intrusive thoughts about harming their infant on purpose.
  • •Postpartum psychosis affects roughly one to two out of every 1,000 birthing parents.
  • •About 75% of postpartum psychosis cases occur in parents with bipolar disorder.
  • •Studies indicate that unwanted, intrusive thoughts are not a risk factor for physical aggression toward an infant.

Research from the Perinatal Anxiety Research Lab at the University of British Columbia indicates that nearly all new parents experience unwanted, intrusive thoughts about accidental harm to their newborns. Approximately 50% of new parents report experiencing intrusive thoughts about harming their infant on purpose. Despite the distressing nature of these thoughts, studies suggest they do not signal a risk of actual physical aggression toward the child.

By the numbers

parents reporting intrusive thoughts of accidental harm99%
parents reporting intrusive thoughts of intentional harm50%
postpartum psychosis cases in parents with bipolar disorder75%

Distinguishing Thoughts from Risk

The Perinatal Anxiety Research Lab conducted two studies examining whether intrusive thoughts of intentional harm correlate with actual violence. The findings showed that parents reporting these thoughts were no more likely to act on them than those who did not. Experts note that when such thoughts are inconsistent with a person's values and beliefs, they are generally not a risk factor for violence. Instead, these thoughts are often experienced by individuals who are highly motivated to keep their infants safe.

Comparison to Postpartum Psychosis

Intrusive thoughts differ significantly from the symptoms of postpartum psychosis, a condition affecting one to two out of every 1,000 birthing parents. In cases of psychosis, thoughts of harm may be linked to delusions or external commands, where a parent might believe harming the infant is necessary or justified. Conversely, unwanted, intrusive thoughts are recognized by the parent as distressing, confusing, and contrary to their own wishes.

Challenges in Clinical Recognition

A lack of awareness among some health care professionals regarding the nature of intrusive thoughts can lead to unnecessary interventions, such as contacting child protective services. This can cause significant distress for parents, who may already be hesitant to disclose these thoughts due to fear of judgment or the potential removal of their child. Researchers emphasize that education for both parents and medical providers is essential to ensure appropriate support and safety.

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This article was independently rewritten by ManyPress editorial AI from reporting originally published by Medical Xpress.

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