Abstract Title:

Prospective study of coffee consumption and cancer incidence in non-white populations.

Abstract Source:

Cancer Epidemiol Biomarkers Prev. 2018 May 18. Epub 2018 May 18. PMID: 29777049

Abstract Author(s):

Song-Yi Park, Neal D Freedman, Christopher A Haiman, Loic Le Marchand, Lynne R Wilkens, Veronica Wendy Setiawan

Article Affiliation:

Song-Yi Park


BACKGROUND: Coffee intake has been associated with risk of cancers, but the findings, mostly from studies in white populations, are inconsistent. We examined the association of coffee consumption with overall cancer incidence and specific cancer sites in a prospective study of African Americans, Native Hawaiians, Japanese Americans, Latinos and whites.

METHODS: 167,720 participants of the Multiethnic Cohort in Hawaii and Los Angeles were included. Baseline coffee intake was assessed by a validated food-frequency questionnaire. Hazard ratios (HRs) and 95% confidence intervals (CIs) for sixteen cancers associated with coffee intake were calculated using Cox regressions.

RESULTS: During a mean follow-up of 15.3 years, 34,031 incident cancer cases were identified among study participants. Coffee intake was associated inversely with liver (≥4 cups/day vs. none: HR=0.57; 95% CI, 0.38-0.87; Ptrend<0.001), ovarian (HR=0.33; 95% CI, 0.17-0.65; Ptrend = 0.007), and thyroid (HR=0.44; 95% CI, 0.23-0.87; Ptrend = 0.007) cancers and melanoma (HR=0.72; 95% CI, 0.52-0.99; Ptrend = 0.002). Coffee intake was also inversely associated with endometrial cancer among women with a body mass index>30 kg/m2 (HR=0.31; 95% CI, 0.14-0.72; Ptrend = 0.04). The associations were similar across five ethnic groups (Pheterogeneity>0.06) and were mainly observed among those who drank caffeinated coffee.

CONCLUSIONS: Based on our prospective data in diverse populations, we found a decreased risk of liver, ovarian, thyroid and endometrial cancers and melanoma associated with higher coffee intake.

IMPACTS: These results suggest that coffee drinking may protect against liver, ovarian, thyroid and endometrial cancers and melanoma.

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