Ultra-Processed Food Intake and Postpartum Depressive Symptoms in Early Postpartum: A Pilot Cross-Sectional Study in...

Background/Objectives: Emerging evidence suggests that ultra-processed food (UPF) consumption may be associated with depressive symptoms, yet data in the early postpartum period remain limited. This pilot study aimed to examine the association between UPF intake and postpartum depressive symptoms among women in the early postpartum. Methods: In this cross-sectional pilot study, 137 women within 6-8 weeks postpartum were recruited from hospitals, maternity clinics, and online support networks in Greece. Dietary intake was assessed using a validated food frequency questionnaire and classified according to the NOVA system. UPF consumption was categorized into quartiles. Postpartum depressive symptoms were evaluated using the Edinburgh Postnatal Depression Scale (EPDS), with clinically significant symptoms defined as EPDS ≥ 13. Multivariable logistic regression analyses were conducted, adjusting for sociodemographic and lifestyle factors. Results: The prevalence of clinically significant postpartum depressive symptoms was 29.9%. No statistically significant associations were observed in adjusted models. However, a higher prevalence of depressive symptoms was observed among women in the highest UPF intake quartile (40.0%) compared with lower quartiles (25.7-28.1%). Poor sleep quality was independently associated with higher odds of depressive symptoms, whereas breastfeeding was associated with lower odds. Confidence intervals were wide, indicating limited statistical precision due to the small sample size. Conclusions: While no statistically significant association was observed in multivariable analyses, a higher prevalence of depressive symptoms was noted among women in the highest UPF intake quartile. The wide confidence intervals indicate substantial uncertainty, and the findings should be interpreted with caution. Larger, adequately powered studies are required to confirm these findings.