Observational studyObstetrics and gynecology2025
Prenatal Cannabis Use and Depressive Symptoms.
Observational study in Obstetrics and gynecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Self-Reported Cannabis Use in Pregnancy and Maternal Psychological Health.Cannabis (Albuquerque, N.M.) · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
14 authors.
Funding
Abstract
objectiveTo evaluate whether cannabis use during pregnancy was associated with depressive symptoms and whether ongoing use beyond the first trimester and higher amounts of cannabis use were associated with increased depressive symptoms.
methodsThis was a secondary analysis of the nuMoM2b (Nulliparous Pregnancy Outcomes Study: Monitoring Mothers to Be) study with participants enrolled from October 2010 to September 2013 at eight academic centers. Individuals with pregnancy outcome data who completed the EPDS (Edinburgh Postnatal Depression Scale) in the first and third trimesters and had available frozen stored urine samples were included. Cannabis exposure was ascertained by urine immunoassay for THC-COOH (11-nor-9-carboxy-delta-9-tetrahydrocannabinol); positive results were confirmed with liquid chromatography tandem mass spectrometry. Cannabis exposure groups for the primary analysis were classified as any exposure (positive urine assay at any of the three time points: 6 0/7-13 6/7 weeks of gestation, 16 0/7-21 6/7 weeks, and 22 0/7-29 6/7 weeks) or no exposure. In a secondary analysis, cannabis exposure was classified as no, only first trimester, or ongoing exposure beyond the first trimester. The primary outcome was depressive symptoms (EPDS score higher than 10) at 22-29 weeks of gestation. The association between cannabis exposure and later depressive symptoms was assessed with multivariable logistic. In an exploratory analysis, first-trimester urine THC-COOH was quantified to determine whether heavier use was associated with greater odds of depressive symptoms later in pregnancy.
resultsOf 10,038 nuMoM2b participants, 8,424 met the inclusion criteria, and 6.4% (n=535) were exposed to cannabis. Of those exposed, 32.1% (n=172) had only first-trimester exposure, and 67.9% (n=363) had ongoing exposure. Any cannabis use was not significantly associated with later depressive symptoms (adjusted odds ratio [aOR] 1.3, 95% CI, 0.97-1.6) compared with no exposure. However, ongoing exposure beyond the first trimester was associated with later depressive symptoms (aOR 1.6, 95% CI, 1.2-2.2). Higher levels of urine THC-COOH in the first trimester and across pregnancy were associated with increased odds of subsequent depressive symptoms.
conclusionAny cannabis exposure was not associated with later-pregnancy increased depressive symptoms. However, ongoing use beyond the first trimester and higher levels of cannabis metabolite in first-trimester urine were associated with greater odds of depressive symptoms in later pregnancy. Directionality of this association cannot be determined given the study design.
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