Miranda Agustin Ramiro auteur aut IRD Cortez M. V. auteur aut IRD Scotta A. V. auteur aut IRD Soria E. A. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Purpose: This work aimed to study postpartum mental outcomes and determinants of the intake of caffeinated beverages during the pandemic in women from Argentina. Methods: This cross-sectional study recruited 619 women who responded to online self-report questionnaires during the first and second waves of COVID-19, including validated instruments (Insomnia Severity Index, Perceived Stress Scale, Postpartum Depression Screening Scale, Memory Complaint Scale, and Breastfeeding Self Efficacy Scale), and general data. Intake frequency and amount of caffeinated beverages were estimated. Multivariate regression and structural equation models identified associations and effects (p < 0.05). Results: Women were under social restrictions for 60.39 days, with home and essential activities increasing caffeinated intake. They ingested (mL/d): yerba mate (1457.71), coffee (66.85), tea (67.61), and soft drinks (50.95), which provided 646.20 mg/d of caffeine. Intakes of coffee and yerba mate were higher than pre-pandemic ones. Coffee was positively associated with stress and insomnia, and indirectly linked to higher levels of depression and memory complaints, and lower breastfeeding self-efficacy. Tea showed a similar but weaker association. Yerba mate correlated inversely with depression (through direct pathways), insomnia, and memory complaints (through indirect pathways), promoting breastfeeding self-efficacy. Soft drinks and caffeine did not present significant associations. Conclusion: Although findings do not imply causation, results suggest that beverages would exhibit caffeine-independent affective and cognitive roles, which might be anxiogenic in the case of coffee and tea (to a lesser extent). Yerba mate showed antidepressant potential. Given that breastfeeding might be compromised during the pandemic, yerba mate intake is promissory to protect postpartum mental health. specialized Coffee Depression Insomnia Stress Tea Ilex paraguariensis ARGENTINE 050 054 33 200198 [9 ] 2023 2666-1497 https://www.documentation.ird.fr/hor/fdi:010090219 10.1016/j.hnm.2023.200198 2666-1497 [F B010090219] https://www.documentation.ird.fr/hor/fdi:010090219 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2023-11/010090219.pdf IRD - Base Horizon / Pleins textes 2023-11-10 2025-02-24 fdi:010090219 fre