What the study found
The study found that prenatal mental health symptoms were not uniform: somatic anxiety symptoms were the most central part of the symptom network at both time points, and positive affect appeared protective within the network. The network became more strongly connected by late gestation, and symptom cluster membership shifted across pregnancy.
Why the authors say this matters
The authors conclude that these findings highlight significant heterogeneity and comorbidity in prenatal maternal mental health. They say the data provide a personalized framework for tracking how symptom subtypes and physiological dysregulation evolve across pregnancy.
What the researchers tested
The researchers studied women in Pakistan who had no pre-existing physical or mental health conditions. They assessed 50 anxiety, depression, and stress symptoms at early to mid-gestation (T1) and mid- to late gestation (T2), then used symptom network analysis, exploratory factor analysis, and hierarchical clustering to identify symptom patterns and compare them with biomarkers including cortisol, C-reactive protein (CRP), glycosylated hemoglobin, cholesterol, blood pressure, and a composite allostatic load score.
What worked and what didn't
Somatic anxiety symptoms were central across both time points, and positive affect was protective within the network. Five clusters were identified at each time point, with substantial shifts in cluster membership across gestation. Biomarker mapping showed elevated CRP in the Flattened Affect cluster compared with Healthy and Somatic Anxiety at T1; at T2, the Depression cluster had the highest CRP and allostatic load, while the Lack of Control cluster had the lowest.
What to keep in mind
The abstract does not describe sample size, follow-up details beyond the two gestational time points, or limitations of the analyses. The findings are specific to women in Pakistan who were exempt from pre-existing physical and mental health conditions.
Key points
- Somatic anxiety symptoms were the most central node in the prenatal symptom networks at both time points.
- The symptom network strengthened from early to mid-gestation to mid- to late gestation.
- Five mental health clusters emerged at each time point, and many women shifted clusters across pregnancy.
- The Flattened Affect cluster had elevated CRP at T1 compared with Healthy and Somatic Anxiety.
- At T2, the Depression cluster had the highest CRP and allostatic load, while the Lack of Control cluster had the lowest.
Disclosure
- Research title:
- Prenatal symptom networks shifted and strengthened across pregnancy
- Authors:
- Dana A. Jarkas, Shahirose S. Premji, Sharifa Lalani, Sidrah Nausheen, Neelofur Babar, Farooq Ghani, Nazneen Islam, Nicole Letourneau, Ntonghanwah Forcheh, Robyn J. McQuaid
- Institutions:
- Aga Khan University, Aga Khan University, Aga Khan University, Aga Khan University Hospital, Aga Khan University Hospital, Carleton University, Carleton University, Queen's University, Queen's University, University of Calgary
- Publication date:
- 2026-02-27
- OpenAlex record:
- View
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