Coffee Intake and Obesity: A Meta-Analysis.

Authors:
Dr. Hannah Oh, Sc.D.
Dr. Hannah Oh, Sc.D.
Rutgers Cancer Institute of New Jersey
Instructor
New Brunswick, NJ | United States

Nutrients 2019 Jun 5;11(6). Epub 2019 Jun 5.

Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02138, USA.

Many studies have explored the relationship between coffee-one of the most commonly consumed beverages today-and obesity. Despite inconsistent results, the relationship has not been systematically summarized. Thus, we conducted a meta-analysis by compiling data from 12 epidemiologic studies identified from PubMed and Embase through February 2019. The included studies assessed obesity by body mass index (BMI, a measure of overall adiposity) or waist circumference (WC, a measure of central adiposity); analyzed the measure as a continuous outcome or binary outcome. Using random effects model, weighted mean difference (WMD) and 95% confidence interval (CI) were obtained for continuous outcomes; summary relative risk (RR) and 95% CI for the highest vs. lowest categories of coffee intake were estimated for binary outcome. For BMI, WMD was -0.08 (95% CI -0.14, -0.02); RR was 1.49 (95% CI 0.97, 2.29). For WC, WMD was -0.27 (95% CI -0.51, -0.02) and RR was 1.07 (95% CI 0.84, 1.36). In subgroup analysis by sex, evidence for an inverse association was more evident in men, specifically for continuous outcome, with WMD -0.05 (95% CI -0.09, -0.02) for BMI and -0.21 (95% CI -0.35, -0.08) for WC. Our meta-analysis suggests that higher coffee intake might be modestly associated with reduced adiposity, particularly in men.

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Source
http://dx.doi.org/10.3390/nu11061274DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6628169PMC
June 2019
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