Key finding
Swedish cohort: each additional decade of parental survival associated with ~22% lower offspring mortality
Evidence & causal status
Moderate
Association / inherited + shared environment
Caveats & limitations
Reliability / bias notes: Parental death data quality; cohort-era and environment effects
This describes a population-level association from published research. It is not a prediction about any one individual, and association is not the same as causation unless stated otherwise above.