PCOS Linked to Reduced Fertility and Later Childbirth

TOPLINE:
Women with polycystic ovary syndrome (PCOS) have 26% higher nulliparity rates and give birth at more advanced ages despite similar family aspirations and higher rates of fertility treatment. Later PCOS diagnosis is associated with double the rate of advanced maternal age at childbirth.
METHODOLOGY:
A prospective cohort study followed 14,247 Australian women from 1996 (age, 18-23 years) to 2021 (age, 43-48 years), comparing 981 women with self-reported PCOS against 13,266 without PCOS.
Participants completed surveys approximately every 3 years, with data collection including childbirth events, fertility issues, and treatment history from 20 weeks of gestational age, including stillbirths.
Analysis focused on comparing parity, maternal age at deliveries, and factors associated with advanced maternal age between groups, with adjustments made for education level, area of residence, marital status, body mass index group, hypertension, and type 2 diabetes.
TAKEAWAY:
Compared with women without PCOS, those with PCOS had fewer births (1.9 ± 1.2 vs 1.7 ± 1.3; P < .001) and higher nulliparity rates (18% vs 23%; P = .003).
PCOS was associated with increased odds of advanced maternal age at first childbirth (adjusted odds ratio [aOR], 1.34; 95% CI, 1.04-1.75) and higher rates of gestational diabetes (aOR, 3.90; 95% CI, 2.99-5.10).
Late PCOS diagnosis was linked to increased odds of advanced maternal age at first childbirth (aOR, 1.98; 95% CI, 1.22-3.22), emphasizing the importance of early diagnosis.
Compared with women without PCOS, those with PCOS were older at first childbirth (28.8 ± 5.5 vs 29.5 ± 5.5 years) and second childbirth (31.1 ± 5.0 vs 32.1 ± 5.2 years) (P < .001 for both).
IN PRACTICE:
“Women with PCOS have increased infertility and have higher rates of seeking and using ovulation induction and IVF than those without PCOS. Moreover, women with PCOS are older at both first and second childbirth, have longer interconception periods, are of advanced maternal age, and have higher nulliparity and lower fecundity compared with women without PCOS,” the authors of the study wrote.
SOURCE:
This study was led by Maria Forslund, MD, PhD, Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg in Gothenburg, Sweden. It was published online in American Journal of Obstetrics & Gynecology.
LIMITATIONS:
This study relied on self-reported PCOS diagnosis, though these data were previously validated in the cohort. While dropouts from the study were common, a previous modeling study showed no serious bias in estimates of associations between risk factors and health outcomes in the longitudinal models.
DISCLOSURES:
Forslund received support from the Swedish Medical Society (SLS-984944; SLS986952). The study was funded by the Australian Government’s Department of Health and Aged Care. Additional disclosures are noted in the original article.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
 
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