Life's Simple 7 for cardiovascular health is associated with cancer risk in the Moli-sani Study

Abstract Background Cardiovascular disease and cancer share modifiable risk factors and, potentially, molecular mechanisms of disease, as postulated by the “common soil” hypothesis. We examined whether the American Heart Association's Life's Simple 7 (LS7) metrics to assess and promote cardiovascular health, is associated with cancer risk, defined as first hospital admission for any cancer obtained through record linkage with hospital discharge forms. Methods Longitudinal analyses on 21,705 apparently cancer-free participants (mean age 55.2±11.6; 51.9% women) at cohort entry in the Moli-sani Study (2005-2010). Components of the LS7 include cigarette smoking, physical activity, diet, body mass index, blood pressure, cholesterol and glucose: each ideal CV health metric was assigned 2 points, and all points were summed to compute a CV health score ranging between 0 to 14 points. CV health scores were then classified as poor (0 to 6), average (7 to 9), and ideal (10 to 14). Results Over a median follow up of 13 y, a total of 1,918 hospital admissions for any cancer were recorded. The proportion of poor, intermediate and ideal CV health were respectively 33.2%, 47.6%, and 19.2%. In a multivariable-adjusted COX analysis controlled for known risk factors, participants in the ideal CV health category experienced 29% lower risk of cancer hospitalization (HR = 0.71; 95%CI 0.61-0.83) compared with the poor CV health category. These associations tended to be stronger in men (HR = 0.60; 95%CI 0.48-0.76) than in women (HR = 0.80; 95%CI 0.64-0.99), but were of the same magnitude in both the elderly (aged ≥65 y; HR = 0.74; 0.55-0.99) and younger participants (aged <65 y; HR = 0.75; 95%CI 0.63-0.90). Conclusions Results from this large cohort of middle-aged and elderly Italians suggest that improving cardiovascular health could also reduce the future burden of cancer, supporting the hypothesis of a common soil of underlying risk factors for these two groups of diseases. Key messages • The Life’s Simple 7 metric initially developed to promote cardiovascular health is associated with future cancer risk in a large population of middle-aged and elderly Italians. • These findings reinforce the notion of a “common soil” of underlying risk factors for cardiovascular disease and cancer, and support common public health strategies for prevention.