RT Journal Article SR Electronic T1 Fried-food consumption and risk of cardiovascular disease and all-cause mortality: a meta-analysis of observational studies JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1567 OP 1575 DO 10.1136/heartjnl-2020-317883 VO 107 IS 19 A1 Pei Qin A1 Ming Zhang A1 Minghui Han A1 Dechen Liu A1 Xinping Luo A1 Lidan Xu A1 Yunhong Zeng A1 Qing Chen A1 Tieqiang Wang A1 Xiaoliang Chen A1 Qionggui Zhou A1 Quanman Li A1 Ranran Qie A1 Xiaoyan Wu A1 Yang Li A1 Yanyan Zhang A1 Yuying Wu A1 Dongsheng Hu A1 Fulan Hu YR 2021 UL http://heart.bmj.com/content/107/19/1567.abstract AB Objective We performed a meta-analysis, including dose–response analysis, to quantitatively determine the association of fried-food consumption and risk of cardiovascular disease and all-cause mortality in the general adult population.Methods We searched PubMed, EMBASE and Web of Science for all articles before 11 April 2020. Random-effects models were used to estimate the summary relative risks (RRs) and 95% CIs.Results In comparing the highest with lowest fried-food intake, summary RRs (95% CIs) were 1.28 (1.15 to 1.43; n=17, I2=82.0%) for major cardiovascular events (prospective: 1.24 (1.12 to 1.38), n=13, I2=75.7%; case–control: 1.91 (1.15 to 3.17), n=4, I2=92.1%); 1.22 (1.07 to 1.40; n=11, I2=77.9%) for coronary heart disease (prospective: 1.16 (1.05 to 1.29), n=8, I2=44.6%; case–control: 1.91 (1.05 to 3.47), n=3, I2=93.9%); 1.37 (0.97 to 1.94; n=4, I2=80.7%) for stroke (cohort: 1.21 (0.87 to 1.69), n=3, I2=77.3%; case–control: 2.01 (1.27 to 3.19), n=1); 1.37 (1.07 to 1.75; n=4, I2=80.0%) for heart failure; 1.02 (0.93 to 1.14; n=3, I2=27.3%) for cardiovascular mortality; and 1.03 (95% CI 0.96 to 1.12; n=6, I2=38.0%) for all-cause mortality. The association was linear for major cardiovascular events, coronary heart disease and heart failure.Conclusions Fried-food consumption may increase the risk of cardiovascular disease and presents a linear dose–response relation. However, the high heterogeneity and potential recall and misclassification biases for fried-food consumption from the original studies should be considered.Data are available upon reasonable request.