Mode
Text Size
Log in / Sign up

Polycystic Ovary Syndrome associated with higher neonatal jaundice rates in Gestational Diabetes MellitusWomen with PCOS face higher rates of infant jaundice during pregnancy

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Note higher rates of neonatal jaundice (24.4% vs 8.9%) in infants of mothers with both GDM and PCOS.

This study is a secondary analysis of a randomized controlled trial conducted across 8 UK centers. The study population consisted of 425 pregnant women diagnosed with Gestational Diabetes Mellitus (GDM) and a body mass index (BMI) ≥25 kg/m². The primary objective was to evaluate pregnancy outcomes, including maternal weight and continuous glucose metrics, while comparing women with Polycystic Ovary Syndrome (PCOS) to those without PCOS.

The study design involved two dietary interventions: a reduced-energy intervention diet of 1200 kcal/day and a standard-energy control diet of 2000 kcal/day. The analysis specifically compared the outcomes of women with PCOS against those without PCOS within this cohort of women with GDM and elevated BMI.

The primary outcome analysis focused on maternal weight and continuous glucose metrics. The results indicated that there were no significant differences in these outcomes between women with and without PCOS. While specific absolute numbers for these metrics were not reported, the direction of the data showed no difference between the groups.

A key secondary outcome was neonatal jaundice. The study found significantly higher rates of neonatal jaundice in infants of women with PCOS compared to those without PCOS (24.4% vs 8.9%, P =.002). Other secondary outcomes, including physical and dietary data, infant birthweight, and neonatal jaundice, were monitored as part of the comprehensive assessment.

Regarding safety and tolerability, no specific adverse events, serious adverse events, or discontinuation rates were reported. The study did not provide specific details on the tolerability of the 1200 kcal/day versus 2000 kcal/day diets among the participants.

These results contribute to the understanding of how PCOS influences pregnancy outcomes in the context of GDM. While maternal metabolic markers and weight remained similar between the two groups, the specific finding regarding neonatal jaundice highlights a potential complication for infants of mothers with both conditions. The study suggests that while dietary interventions may be equally effective or tolerable regardless of PCOS status, certain neonate-specific risks may persist.

The primary limitation of this evidence is that it is a secondary analysis of an original randomized controlled trial. This may affect the ability to generalize findings directly from the initial study design without considering the specific parameters of the primary analysis. Additionally, the lack of reported data on adverse events limits the assessment of safety profiles for the different caloric interventions.

Clinically, these results suggest that PCOS was not associated with increased risks for most suboptimal pregnancy outcomes or reduced efficacy of a dietary intervention in this cohort where BMI and glycemia were comparable. However, the significantly higher rate of neonatal jaundice (24.4% vs 8.9%) in the PCOS group suggests that clinicians should remain vigilant regarding neonatal complications in patients with both GDM and PCOS. Questions remain regarding the specific mechanisms driving the increased incidence of jaundice in this population.

How this fits prior evidence

How this fits prior evidence: This finding addresses a gap by identifying a specific risk for neonatal jaundice in women with both Polycystic Ovary Syndrome and Gestational Diabetes Mellitus. While previous data indicated that non-obese women with PCOS show no significant differences in serum vitamin D levels, this study highlights a distinct neonatal outcome difference despite similar maternal metabolic profiles.

For many women, managing a pregnancy involves navigating complex health hurdles. If you have Polycystic Ovary Syndrome (PCOS), you might already feel extra pressure regarding how your condition affects your baby's health. This research looks specifically at how PCOS impacts outcomes for pregnant women who also have gestational diabetes, a condition where blood sugar levels rise during pregnancy. By looking closely at these two conditions together, researchers hoped to see if having PCOS changed the way a specific diet helped manage blood sugar or affected the health of the newborn.

The study looked at 425 pregnant women across eight centers in the UK. These women all had gestational diabetes and a body mass index (BMI) of 25 or higher. The researchers divided the group to see how different calorie levels affected their health. They compared women who had PCOS with those who did not have the condition, looking at things like maternal weight, blood sugar levels, and the health of the babies after they were born.

The results showed something very specific. While the mother's weight and blood sugar levels were similar regardless of whether she had PCOS or not, there was a notable difference for the babies. Infants born to mothers with PCOS had much higher rates of neonatal jaundice. Jaundice is a yellowing of the skin and eyes caused by a buildup of bilirubin in the blood. In this study, 24.4% of babies born to mothers with PCOS had jaundice, compared to only 8.9% of babies born to mothers without PCOS.

It is important to keep these findings in perspective. While the link between PCOS and higher rates of jaundice in newborns was clear, the researchers did not find that PCOS made the dietary intervention less effective for the mothers. The mother's weight and glucose metrics remained similar across both groups. This means that while there is a specific risk noted for the babies, the primary way doctors manage blood sugar during pregnancy did not seem to change based on a PCOS diagnosis.

Because this was a secondary analysis of an existing study, we should be cautious about how much weight to give these results alone. It provides a helpful clue that infants of mothers with PCOS might need closer monitoring for jaundice, but it does not mean every baby with PCOS will have issues. For now, this means that while the core treatment for gestational diabetes remains the same for all women, doctors can use this information to keep a closer eye on newborn jaundice in patients with a history of PCOS.

What this means for you:
Infants of mothers with PCOS had higher rates of jaundice, though maternal health outcomes remained similar.

Study Details

Study typeRct
Sample sizen = 425
EvidenceLevel 2
Follow-up6.7 mo
PublishedJun 2026
View Original Abstract ↓
CONTEXT: Polycystic ovary syndrome (PCOS) is a risk factor for gestational diabetes mellitus (GDM) due to shared pathophysiological associations with insulin resistance and adiposity, and may increase the risk of suboptimal perinatal outcomes in GDM. It is unclear if this excess risk upon outcomes is attributable to PCOS, more severe hyperglycemia, higher maternal BMI or reduced efficacy of dietary interventions. OBJECTIVE: To assess associations of PCOS, dietary intervention and gestational weight loss with maternal and neonatal outcomes in women with GDM. METHODS/DESIGN: A secondary analysis from the DiGest double-blind randomized controlled trial. Data on self-reported PCOS status were collected at baseline. PARTICIPANTS: Pregnant women with GDM and BMI ≥25 kg/m2 from 8 UK centers (N = 425; 50 with PCOS and 375 without PCOS). INTERVENTION: Reduced-energy intervention diet (1200 kcal/day) or standard-energy control diet (2000 kcal/day) from enrollment (29 weeks) until delivery. MAIN OUTCOME MEASURES: Pregnancy outcomes, including maternal weight and continuous glucose metrics, physical and dietary data, and infant birthweight and jaundice, were compared between women with and without PCOS using univariate tests and multivariable regression models were applied for adjusted analysis. RESULTS: Women with GDM and PCOS had similar baseline characteristics, glycemia, BMI, and pregnancy outcomes compared with women with GDM alone, but their infants had higher rates of neonatal jaundice (24.4% vs 8.9%, P = .002). Outcomes across the dietary interventions were similar in women with and without PCOS. CONCLUSION: In women with GDM, PCOS was not associated with increased risks for most suboptimal pregnancy outcomes or reduced efficacy of a dietary intervention in this cohort where BMI and glycemia were comparable.
Free Newsletter

Clinical research that matters. Delivered to your inbox.

Join thousands of clinicians and researchers. No spam, unsubscribe anytime.