Key result
Polypharmacy is not linked to depressive symptoms among older adults.
Why the study?
To examine the relationship between polypharmacy and depressive symptoms among U.S. community-dwelling older adults and whether it varied by gender.
Does polypharmacy increase depressive symptoms in older adults, and does this relationship vary by gender?
Observational (n=3,354)
Does polypharmacy increase depressive symptoms in older adults, and does this relationship vary by gender?
p-value: p=>0.05
Polypharmacy is not significantly associated with depressive symptoms in older adults, suggesting interventions should focus on physical health rather than medication count alone for depression management.
Polypharmacy reduction may not alleviate depressive symptoms in older adults; cross-sectional data leaves open longitudinal or causal associations.
OBJECTIVES: This study examined the relationship between polypharmacy and depressive symptoms among U.S. community-dwelling older adults and whether it varied by gender. METHODS: We conducted a retrospective population-based analysis of 3,354 adults aged 65 and older using data from the 2009 Health and Retirement Study Health and Well-Being Study. Polypharmacy was defined as the use of five or more prescription medications. Depressive symptoms were measured using the 8-item Center for Epidemiologic Studies Depression Scale (CESD-8). Negative binomial regression models assessed associations between polypharmacy and depressive symptoms and whether the relationship varied by gender. RESULTS: > .05). There were no significant gender differences in unadjusted or adjusted models in the relationship between polypharmacy and depressive symptoms. CONCLUSIONS: Polypharmacy was not related to depressive symptoms among older women or men. CLINICAL IMPLICATIONS: Interventions to address physical health may be more salient to depression management than polypharmacy regardless of gender.
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Qiu et al. (2025) conducted an observational in Depressive symptoms (n=3,354). Polypharmacy was evaluated on Depressive symptoms measured using the 8-item Center for Epidemiologic Studies Depression Scale (CESD-8) (p=>0.05). Polypharmacy was not significantly associated with depressive symptoms among older adults, with no significant gender differences observed in unadjusted or adjusted models (P>0.05).
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