Jun Lv1, Canqing Yu2, Yu Guo3, Zheng Bian3, Ling Yang4, Yiping Chen4, Xuefeng Tang5, Weiyuan Zhang6, Yijian Qian7, Yuelong Huang8, Xiaoping Wang9, Junshi Chen10, Zhengming Chen4, Lu Qi11, Liming Li12. 1. Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China; Peking University Institute of Environmental Medicine, Beijing, China. 2. Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China. 3. Chinese Academy of Medical Sciences, Beijing, China. 4. Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom. 5. Sichuan Center for Disease Control and Prevention, Chengdu, Sichuan, China. 6. Liuzhou Center for Disease Control and Prevention, Liuzhou, Guangxi, China. 7. Tongxiang Center for Disease Control and Prevention, Tongxiang, Zhejiang, China. 8. Hunan Center for Disease Control and Prevention, Changsha, Hunan, China. 9. Maiji Center for Disease Control and Prevention, Tianshui, Gansu, China. 10. China National Center for Food Safety Risk Assessment, Beijing, China. 11. Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana; Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts. Electronic address: lqi1@tulane.edu. 12. Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China; Chinese Academy of Medical Sciences, Beijing, China. Electronic address: lmlee@vip.163.com.
Abstract
BACKGROUND: Adherence to a combination of healthy lifestyle factors has been related to a considerable reduction of cardiovascular risk in white populations; however, little is known whether such associations persist in nonwhite populations like the Asian population. OBJECTIVES: This study aimed to examine the associations of a combination of modifiable, healthy lifestyle factors with the risks of ischemic cardiovascular diseases and estimate the proportion of diseases that could potentially be prevented by adherence to these healthy lifestyle patterns. METHODS: This study examined the associations of 6 lifestyle factors with ischemic heart disease and ischemic stroke (IS) in the China Kadoorie Biobank of 461,211 participants 30 to 79 years of age who did not have cardiovascular diseases, cancer, or diabetes at baseline. Low-risk lifestyle factors were defined as nonsmoking status or having stopped smoking for reasons other than illness, alcohol consumption of <30 g/day, a median or higher level of physical activity, a diet rich in vegetables and fruits and limited in red meat, a body mass index of 18.5 to 23.9 kg/m2, and a waist-to-hip ratio <0.90 for men and <0.85 for women. RESULTS: During a median of 7.2 years (3.3 million person-years) of follow-up, this study documented 3,331 incident major coronary events (MCE) and 19,348 incident ISs. In multivariable-adjusted analyses, current nonsmoking status, light to moderate alcohol consumption, high physical activity, a diet rich in vegetables and fruits and limited in red meat, and low adiposity were independently associated with reduced risks of MCE and IS. Compared with participants without any low-risk factors, the hazard ratio for participants with ≥4 low-risk factors was 0.42 (95% confidence interval: 0.34 to 0.52) for MCE and 0.61 (95% confidence interval: 0.56 to 0.66) for IS. Approximately 67.9% (95% confidence interval: 46.5% to 81.9%) of the MCE and 39.1% (95% confidence interval: 26.4% to 50.4%) of the IS cases were attributable to poor adherence to healthy lifestyle. CONCLUSIONS: Adherence to healthy lifestyle may substantially lower the burden of cardiovascular diseases in Chinese.
BACKGROUND: Adherence to a combination of healthy lifestyle factors has been related to a considerable reduction of cardiovascular risk in white populations; however, little is known whether such associations persist in nonwhite populations like the Asian population. OBJECTIVES: This study aimed to examine the associations of a combination of modifiable, healthy lifestyle factors with the risks of ischemic cardiovascular diseases and estimate the proportion of diseases that could potentially be prevented by adherence to these healthy lifestyle patterns. METHODS: This study examined the associations of 6 lifestyle factors with ischemic heart disease and ischemic stroke (IS) in the China Kadoorie Biobank of 461,211 participants 30 to 79 years of age who did not have cardiovascular diseases, cancer, or diabetes at baseline. Low-risk lifestyle factors were defined as nonsmoking status or having stopped smoking for reasons other than illness, alcohol consumption of <30 g/day, a median or higher level of physical activity, a diet rich in vegetables and fruits and limited in red meat, a body mass index of 18.5 to 23.9 kg/m2, and a waist-to-hip ratio <0.90 for men and <0.85 for women. RESULTS: During a median of 7.2 years (3.3 million person-years) of follow-up, this study documented 3,331 incident major coronary events (MCE) and 19,348 incident ISs. In multivariable-adjusted analyses, current nonsmoking status, light to moderate alcohol consumption, high physical activity, a diet rich in vegetables and fruits and limited in red meat, and low adiposity were independently associated with reduced risks of MCE and IS. Compared with participants without any low-risk factors, the hazard ratio for participants with ≥4 low-risk factors was 0.42 (95% confidence interval: 0.34 to 0.52) for MCE and 0.61 (95% confidence interval: 0.56 to 0.66) for IS. Approximately 67.9% (95% confidence interval: 46.5% to 81.9%) of the MCE and 39.1% (95% confidence interval: 26.4% to 50.4%) of the IS cases were attributable to poor adherence to healthy lifestyle. CONCLUSIONS: Adherence to healthy lifestyle may substantially lower the burden of cardiovascular diseases in Chinese.
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