Systematic Review with Meta-Analysis: Low-Level Alcohol Consumption and the Risk of Liver Cancer
2020
Background/Aims: Multiple meta-analyses and observational studies have reported that alcohol is a risk factor for liver cancer. However, whether there is a safe level of alcohol consumption remains unclear. We performed a systematic review and meta-analysis of the correlation between low-level alcohol consumption and the risk of liver cancer. Methods: Nested case-control studies and cohort studies involving the general population published prior to July 2019 were searched. In total, 28 publications (31 cohorts) with 4,899 incident cases and 10,859 liver cancer-related deaths were included. The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated. Results: Compared with those with low levels of alcohol consumption, moderate and heavy drinkers (>/=1 drink/day for females and >/=2 drinks/day for males) had pooled ORs of 1.418 (95% CI, 1.192 to 1.687; p /=1 drink/day for females and >/=2 drinks/day for males) is related to a higher risk of liver cancer.
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