Key result
Each additional ideal midlife CV health metric is linked to ~9% lower overall cancer risk.
Why the study?
Given common risk factors and mechanisms between cancer and cardiovascular disease, researchers examined whether the number of ideal cardiovascular health metrics in midlife is associated with incident cancer.
Does a greater number of ideal cardiovascular health metrics in midlife reduce the risk of incident cancer in adults free of cancer and cardiovascular disease?
Cohort (n=39,718)
Yes
Does a greater number of ideal cardiovascular health metrics in midlife reduce the risk of incident cancer in adults free of cancer and cardiovascular disease?
A greater number of ideal cardiovascular health metrics in midlife is associated with a lower risk of incident cancer, particularly lung cancer, highlighting the potential of primordial cardiovascular prevention to also reduce cancer burden.
May support midlife CV health promotion to lower cancer risk; extends metrics to incident cancer in observational cohorts.
BACKGROUND: Primordial prevention may be a relevant strategy for the prevention of cancer. Given the commonality of risk factors and mechanisms between cancer and cardiovascular disease, we examined the associations between the number of ideal cardiovascular health metrics in midlife and incident cancer. METHODS: In 3 European cohorts (NutriNet-Santé and GAZEL, France; Whitehall II, United Kingdom), the number of ideal cardiovascular health metrics was determined at baseline (range 0-7). Follow-up for cancer events was until October 2020 (NutriNet-Santé), March 2017 (Whitehall II) and December 2015 (GAZEL). Cox regression was conducted in each cohort, and results were thereafter pooled using a random-effects model. RESULTS: Data were available on 39 718 participants. A total of 16 237 were from NutriNet-Santé (mean age 51.3 yr; 28% men), 9418 were from Whitehall II (mean age 44.8 yr; 68% men) and 14 063 were from GAZEL (mean age 45.2 yr; 75% men). The median follow-up was 8.1 years in NutriNet-Santé, 29.6 years in Whitehall II and 24.8 years in GAZEL, and yielded a total of 4889 cancer events. A greater number of ideal cardiovascular health metrics was associated with a lower overall cancer risk in each cohort, with an aggregate hazard ratio (HR) per 1 increment in number of ideal metrics of 0.91 (95% confidence interval [CI] 0.88-0.93). This association remained after removal of the smoking metric (aggregate HR per unit increment in number of ideal metrics: 0.94, 95% CI 0.90-0.97), and site-specific analysis demonstrated a significant association with lung cancer. INTERPRETATION: A greater number of ideal cardiovascular health metrics in midlife was associated with lower cancer risk, notably lung cancer. Primordial prevention of cardiovascular risk factors in midlife may be a complementary strategy to prevent the onset of cancer.
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Sloten et al. (2023) conducted a cohort in Incident cancer (n=39,718). Ideal cardiovascular health metrics (7-item score) vs. Per 1-metric increment was evaluated on Incident cancer of any site (HR 0.91, 95% CI 0.88-0.93). A greater number of ideal cardiovascular health metrics in midlife was associated with a lower overall cancer risk, demonstrating a 9% risk reduction per 1-metric increment (HR 0.91).
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