Key result
A 10-point LC9 score increase is linked to ~24% lower all-cause mortality among cancer survivors.
Why the study?
Life's Crucial 9 (LC9) integrates psychological well-being with Life's Essential 8, but its prognostic value remained unclear.
Does a higher Life's Crucial 9 (LC9) score reduce all-cause, cancer-specific, and cardiovascular mortality in US cancer survivors?
Cohort (n=2,558)
Does a higher Life's Crucial 9 (LC9) score reduce all-cause, cancer-specific, and cardiovascular mortality in US cancer survivors?
Answers are grounded in this paper and cite their sources.
Higher Life's Crucial 9 (LC9) scores, which integrate cardiovascular and psychological health, are independently associated with significantly lower risks of all-cause, cancer-specific, and cardiovascular mortality in US cancer survivors.
BACKGROUND: Life's Crucial 9 (LC9) is a recently proposed cardiovascular health (CVH) scoring system that integrates psychological well-being with Life's Essential 8 (LE8). However, its prognostic value remains unclear. This study aims to investigate the association between LC9 and outcomes among cancer survivors. METHODS: A total of 2,558 cancer survivors from the National Health and Nutrition Examination Survey (NHANES) 2005-2018 were included in this study. LC9, representing a dimension of psychological health, was calculated as the average of the LE8 score and the depression score. Cox proportional hazards regression, restricted cubic spline (RCS) analysis, subgroup analysis, and Kaplan-Meier survival curves were employed to evaluate the association between LC9 and mortality risk, with adjustments for potential confounders. RESULTS: During an average follow-up period of 80 months, 640 deaths occurred, including 205 from cancer and 128 from cardiovascular disease. After adjusting for all covariates using Cox regression, a 10-point increase in the LC9 score was associated with a 24% reduction in all-cause mortality (HR: 0.76; 95% CI: 0.68-0.84), a 19% reduction in cancer-specific mortality (HR: 0.81; 95% CI: 0.68-0.97), and a 28% reduction in cardiovascular mortality (HR: 0.72; 95% CI: 0.58-0.90). Kaplan-Meier survival curves indicated lower rates of all-cause, cancer-specific, and cardiovascular mortality among participants with higher LC9 scores. RCS analysis revealed a linear inverse association between LC9 and all-cause and cancer-specific mortality and a nonlinear inverse association with cardiovascular mortality. CONCLUSION: Among cancer survivors in the United States, higher LC9 scores were independently associated with lower risks of all-cause, cancer-specific, and cardiovascular mortality. This finding highlights the potential link between cardiovascular health and survival outcomes in cancer survivors, suggesting that improving cardiovascular health may serve as an important preventive strategy to enhance survival rates in this population.
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Gong et al. (2025) conducted a cohort in Cancer survivors (n=2,558). Life's Crucial 9 (LC9) score vs. Lower LC9 score was evaluated on All-cause mortality (per 10-point increase in LC9 score) (HR 0.76, 95% CI 0.68-0.84, p=<0.001). A 10-point increase in the Life's Crucial 9 score was associated with a 24% reduction in all-cause mortality among US cancer survivors.
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