News | Study Systematically Quantifies the Broad Impact of Unintended Pregnancy on Maternal Health
Research from the University of the Basque Country (UPV/EHU) in Spain shows that unintended pregnancy has a significantly greater impact on maternal health than planned pregnancy. Led by Ikerbasque researcher Anna Barbuscia, the study is the first to use longitudinal data to systematically examine the long-term effects of unintended pregnancy on maternal health.
Although the global proportion of unintended pregnancies has declined in recent decades, it is still estimated at nearly 23%. In a French sample of more than 11500 mothers, about 20% had experienced an unintended pregnancy. Mothers with unintended pregnancies had a markedly greater decline in physical and mental health after childbirth than mothers with planned pregnancies.
Key Finding: Health Effects Vary by Age
Barbuscia noted that the health impact varies by age. During the first two years after childbirth, deterioration was more pronounced among women under 30. She explained: “Younger women often have less stable emotional and employment circumstances, such as still being in education or lacking stable work, so an unintended pregnancy can have a greater effect on their lives.”
Over the longer term, however, younger mothers recovered more quickly than women over 30 because their health was better at baseline. This offers a new perspective on age-related differences in health after unintended pregnancy.
Distinguishing Unwanted from Mistimed Pregnancy
The study distinguished pregnancies that were truly unwanted from pregnancies that occurred earlier than planned. Barbuscia explained: “Not wanting a child or another child is different from planning a future pregnancy that occurs sooner than expected.” Truly unwanted pregnancies had a more pronounced negative impact on maternal health.
An Unexpected Mental Health Finding
The study also examined mental health. Although mothers with unintended pregnancies were more likely to have mental health difficulties before birth, their risk of postpartum depressive symptoms was not significantly higher than that of mothers with planned pregnancies. This contradicted the team's initial hypothesis and offers a new direction for mental health research.
Longitudinal Analysis Improves Accuracy
The researchers collected detailed data on health and pregnancy intentions before and after pregnancy. Barbuscia emphasized that this design helped separate the effects of socioeconomic factors and more accurately assess the direct health impact of unintended pregnancy.
“Traditional studies survey women only after childbirth and are vulnerable to recall bias, while our longitudinal data more closely reflect what occurred,” Barbuscia added. The method strengthened the conclusions and provides a reliable framework for future research.
Significance: Evidence for Public Health Policy
The study provides a scientific basis for understanding the broad maternal health impact of unintended pregnancy and informs public health policies to improve maternal and infant health. Barbuscia noted that clarifying the pathways through which unintended pregnancy affects health can support more effective interventions.
News | Study Systematically Quantifies the Broad Impact of Unintended Pregnancy on Maternal Health
News | Study Systematically Quantifies the Broad Impact of Unintended Pregnancy on Maternal Health
Research from the University of the Basque Country (UPV/EHU) in Spain shows that unintended pregnancy has a significantly greater impact on maternal health than planned pregnancy. Led by Ikerbasque researcher Anna Barbuscia, the study is the first to use longitudinal data to systematically examine the long-term effects of unintended pregnancy on maternal health.
Although the global proportion of unintended pregnancies has declined in recent decades, it is still estimated at nearly 23%. In a French sample of more than 11500 mothers, about 20% had experienced an unintended pregnancy. Mothers with unintended pregnancies had a markedly greater decline in physical and mental health after childbirth than mothers with planned pregnancies.
Key Finding: Health Effects Vary by Age
Barbuscia noted that the health impact varies by age. During the first two years after childbirth, deterioration was more pronounced among women under 30. She explained: “Younger women often have less stable emotional and employment circumstances, such as still being in education or lacking stable work, so an unintended pregnancy can have a greater effect on their lives.”
Over the longer term, however, younger mothers recovered more quickly than women over 30 because their health was better at baseline. This offers a new perspective on age-related differences in health after unintended pregnancy.
Distinguishing Unwanted from Mistimed Pregnancy
The study distinguished pregnancies that were truly unwanted from pregnancies that occurred earlier than planned. Barbuscia explained: “Not wanting a child or another child is different from planning a future pregnancy that occurs sooner than expected.” Truly unwanted pregnancies had a more pronounced negative impact on maternal health.
An Unexpected Mental Health Finding
The study also examined mental health. Although mothers with unintended pregnancies were more likely to have mental health difficulties before birth, their risk of postpartum depressive symptoms was not significantly higher than that of mothers with planned pregnancies. This contradicted the team's initial hypothesis and offers a new direction for mental health research.
Longitudinal Analysis Improves Accuracy
The researchers collected detailed data on health and pregnancy intentions before and after pregnancy. Barbuscia emphasized that this design helped separate the effects of socioeconomic factors and more accurately assess the direct health impact of unintended pregnancy.
“Traditional studies survey women only after childbirth and are vulnerable to recall bias, while our longitudinal data more closely reflect what occurred,” Barbuscia added. The method strengthened the conclusions and provides a reliable framework for future research.
Significance: Evidence for Public Health Policy
The study provides a scientific basis for understanding the broad maternal health impact of unintended pregnancy and informs public health policies to improve maternal and infant health. Barbuscia noted that clarifying the pathways through which unintended pregnancy affects health can support more effective interventions.
Source:
Collected online