Food insecurity and mortality in older adults: a prospective reconstruction

Food insecurity is increasingly recognised as a public health concern among older adults, yet the mechanisms linking it to mortality remain unclear. Gianfredi and colleagues recently examined this association using data from the English Longitudinal Study of Ageing (ELSA), reporting that food insecurity was associated with a 41% higher risk of all‑cause mortality and a 126% higher risk of premature mortality (before age 75). While the study addresses an important question using a large, nationally representative cohort, four methodological considerations warrant careful attention before these findings can be interpreted as evidence of a causal relationship. Four methodological considerations, premature mortality definition, unmeasured nutritional status, mediator adjustment, and absent diet quality assessment, warrant careful attention before causal interpretation. Future studies should adopt sensitivity analyses for premature mortality thresholds, measure nutritional status directly, distinguish confounders from mediators using directed acyclic graphs, and assess diet quality using validated indices. Until these methodological gaps are addressed, the evidence that food insecurity causally influences mortality in older adults remains inconclusive.

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