CONICET | Buscador de Institutos y Recursos Humanos

Purpose: This work aimed to study postpartum mental outcomes and determinants of the intake of caffeinatedbeverages during the pandemic in women from Argentina.Methods: This cross-sectional study recruited 619 women who responded to online self-report questionnairesduring 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 increasingcaffeinated 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 prepandemicones. Coffee was positively associated with stress and insomnia, and indirectly linked to higherlevels of depression and memory complaints, and lower breastfeeding self-efficacy. Tea showed a similar butweaker association. Yerba mate correlated inversely with depression (through direct pathways), insomnia, andmemory complaints (through indirect pathways), promoting breastfeeding self-efficacy. Soft drinks and caffeinedid not present significant associations.Conclusion: Although findings do not imply causation, results suggest that beverages would exhibit caffeineindependentaffective and cognitive roles, which might be anxiogenic in the case of coffee and tea (to a lesserextent). Yerba mate showed antidepressant potential. Given that breastfeeding might be compromised during thepandemic, yerba mate intake is promissory to protect postpartum mental health.

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