Gastroenterology

Gastroenterology

Volume 148, Issue 1, January 2015, Pages 118-125
Gastroenterology

Original Research
Full Report: Clinical—Liver
Association of Coffee Intake With Reduced Incidence of Liver Cancer and Death From Chronic Liver Disease in the US Multiethnic Cohort

https://doi.org/10.1053/j.gastro.2014.10.005Get rights and content

Background & Aims

Coffee consumption has been proposed to reduce risk for hepatocellular carcinoma (HCC) and chronic liver disease (CLD), but few data are available from prospective, US multiethnic populations. We evaluated the association of coffee intake with HCC and CLD in 162,022 African Americans, Native Hawaiians, Japanese Americans, Latinos, and whites in the US Multiethnic Cohort (MEC).

Methods

We collected data from the MEC, a population-based prospective cohort study of >215,000 men and women from Hawaii and California, assembled in 1993–1996. Participants reported coffee consumption and other dietary and lifestyle factors when they joined the study. During an 18-year follow-up period, there were 451 incident cases of HCC and 654 deaths from CLD. Hazard rate ratios (RRs) and 95% confidence intervals (CIs) were calculated using Cox regression, adjusting for known HCC risk factors.

Results

High levels of coffee consumption were associated with reduced risk of incident HCC and CLD mortality (Ptrend ≤ .0002). Compared with non-coffee drinkers, those who drank 2–3 cups per day had a 38% reduction in risk for HCC (RR = 0.62; 95% CI: 0.46–0.84); those who drank ≥4 cups per day had a 41% reduction in HCC risk (RR = 0.59; 95% CI: 0.35–0.99). Compared with non-coffee drinkers, participants who consumed 2–3 cups coffee per day had a 46% reduction in risk of death from CLD (RR = 0.54; 95% CI: 0.42–0.69) and those who drank ≥4 cups per day had a 71% reduction (RR = 0.29; 95% CI: 0.17–0.50). The inverse associations were similar regardless of the participants’ ethnicity, sex, body mass index, smoking status, alcohol intake, or diabetes status.

Conclusions

Increased coffee consumption reduces the risk of HCC and CLD in multiethnic US populations.

Section snippets

Study Population

The MEC is an ongoing population-based prospective cohort study with >215,000 men and women from Hawaii and California (mainly Los Angeles County), assembled between 1993 and 1996. The MEC was established to study dietary, environmental, and genetic risk factors for cancer and other chronic diseases. The details of the study design and baseline characteristics have been published previously.22 Briefly, the cohort is comprised predominantly of African Americans, Native Hawaiians, Japanese

Results

After a median of 18 years of follow-up, a total of 451 incident cases of HCC (55 whites, 69 African Americans, 32 Native Hawaiians, 152 Japanese Americans, and 143 Latinos) and 654 CLD deaths (166 whites, 83 African Americans, 34 Native Hawaiians, 102 Japanese Americans, and 269 Latinos) were identified during the follow-up period among the 162,022 at-risk cohort participants (Table 1). The mean age of diagnosis for HCC was 71.7 years, ranging from 68.7 years in whites to 73.8 years in

Discussion

In this prospective cohort of multiethnic US populations, we found that increasing coffee consumption was associated, in a dose-dependent manner, with lower risks of incident HCC and mortality from CLD. Compared with individuals who did not drink coffee, those who drank 2–3 cups per day had a 38% reduction in risk of HCC and a 46% reduction in risk of CLD death, and those who drank ≥4 cups per day had a 41% reduction in risk of HCC and a 71% reduction in risk of CLD death. Although the numbers

Acknowledgments

The authors thank the MEC participants for their participation and commitment. The authors thank Ms Jacqueline Porcel for her assistance in the analysis.

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    This article has an accompanying continuing medical education activity on page e15. Learning Objective: Upon completion of this exercise, the learner will be able to discuss the potential hepatoprotective effects of coffee consumption on liver disease.

    Conflicts of interest The authors disclose no conflicts.

    Funding This work supported by National Cancer Institute grants CA164973 and CA186203.

    Author names in bold designate shared co-first authorship.

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