• Yangting He, Yansen Bai, Sheng Wei, Jing Yuan, Youjie Wang, Weihong Chen, Ping Yao, Xiaoping Miao, Yuan Liang, Xiaomin Zhang, Meian He, Shaofa Nie, Handong Yang, Tangchun Wu, Huan Guo, and Li Liu.
• Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health,Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
• Ann. Med. 2020 Nov 1; 52 (7): 393402393-402.

BackgroundStudies on the association between healthy lifestyle and cancer risk are limited among the old Chinese population.MethodsThe healthy lifestyle score was derived from smoking, drinking, diet, body mass index and physical activity among 23734 retired employees from the Dongfeng-Tongji Cohort. Cox proportional hazards regression was used to calculate the hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs). The rate advancement periods (RAPs) and the population attributable risk percentage (PAR%) were estimated to indicate the benefits of removing risk lifestyle factors.ResultsDuring a median follow-up of 8.16 years, 2023 cancer cases were identified. Compared with 0-2 points of the healthy lifestyle score, the HRs were 0.87 (95% CI: 0.76, 0.99), 0.83 (95% CI: 0.73, 0.94), and 0.74 (95% CI: 0.64, 0.86) for 3, 4, and 5 points, respectively, with the corresponding RAPs of -4.40 (95% CI: -8.39, -0.41), -5.84 (95% CI: -9.77, -1.90), and -9.14 (95% CI: -14.03, -4.25), respectively. Approximately 15% of incident cancer cases among total population and 22% among men would be prevented by following all 5 healthy lifestyle factors.ConclusionsThe current study suggests that healthy lifestyle could reduce cancer risk in the retired Chinese population, especially in males. Key messages Healthy lifestyle derived by smoking, drinking, diet, body mass index and physical activity presented a strong protective effect on cancer risk among the retired Chinese population, especially in males. We employed the rate advancement periods and the population attributable risk percentage to indicate the benefits of adopting healthy lifestyle and we found that following all 5 healthy lifestyle factors could delay the risk of developing cancer by 9.14 years and prevent 15% of incident cancer cases.

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