Joint association of modifiable lifestyle and metabolic health status with incidence of cardiovascular disease and all-cause mortality: a prospective cohort study.

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We aimed to identify the joint associations of modifiable lifestyle and metabolic factors with the incidences of cardiovascular disease and all-cause mortality. We recruited 94,831 participants (men, 79.76%; median age, 51.60 [43.47-58.87]) without a history of cardiovascular disease from the Kailuan study during 2006 and 2007 and followed them until a cardiovascular disease event, or death occurred, or until December 31, 2017. Baseline metabolic health status was assessed using Adult Treatment Panel III criteria, and details of the lifestyles of the participants were recorded using a self-reported questionnaire. We used Cox proportional hazards models to evaluate the joint associations. During a median follow-up of 11.03 years, we recorded 6590 cardiovascular disease events and 9218 all-cause mortality. Participants with the most metabolic risk components and the least healthy lifestyle had higher risk of cardiovascular disease (hazard ratio 2.06 [95% confidence interval (CI) 1.77-2.39]) and mortality (HR 1.53 [95% CI 1.31-1.78]), than participants with fewer metabolic risk components and the healthiest lifestyle. Compared with those in participants with the healthiest lifestyle, the HRs for cardiovascular disease in participants with the least healthy lifestyle were 1.26 (95% CI 1.17-1.37), 1.16 (95% CI 1.03-1.31), and 1.07 (95% CI 0.90-1.27) for those with low, medium, and high metabolic risk, respectively. Healthy lifestyle is associated with a lower risk of cardiovascular disease and there is no significant interaction between metabolic risk and a healthy lifestyle. Therefore, a healthy lifestyle should be promoted, even for people with high metabolic risk.