Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis
Coffee contains bioactive compounds with anti-inflammatory properties, and its consumption may reduce c-reactive protein (CRP) levels, a biomarker of chronic inflammation. A previous meta-analysis reported no overall association between blood CRP level and coffee consumption by modeling the coffee c...
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doaj-2e3c3358c92b405aada70c19a1453a0d2020-11-25T02:04:17ZengMDPI AGNutrients2072-66432020-05-01121349134910.3390/nu12051349Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-AnalysisElizabeth D. Moua0Chenxiao Hu1Nicole Day2Norman G. Hord3Yumie Takata4College of Pharmacy, Oregon State University/Oregon Health & Science University, Corvallis, OR 97331, USACollege of Science, Department of Statistics, Oregon State University, Corvallis, OR 97331, USACollege of Engineering, School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USACollege of Public Health and Human Sciences, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR 97331, USACollege of Public Health and Human Sciences, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR 97331, USACoffee contains bioactive compounds with anti-inflammatory properties, and its consumption may reduce c-reactive protein (CRP) levels, a biomarker of chronic inflammation. A previous meta-analysis reported no overall association between blood CRP level and coffee consumption by modeling the coffee consumption in categories, with substantial heterogeneity. However, the coffee cup volume was not considered. We conducted a systematic review and dose–response meta-analysis investigating the association between coffee consumption and CRP levels reported in previous observational studies. A dose–response meta-analysis was conducted by mixed-effects meta-regression models using the volume of coffee consumed as metric. Eleven studies from three continents were identified using the PubMed database, totaling 61,047 participants. Three studies with the largest sample sizes observed a statistically significant association between coffee and CRP levels, which was inverse among European and United States (US) women and Japanese men (1.3%–5.5% decrease in CRP per 100 mL of coffee consumed) and positive among European men (2.2% increase). Other studies showed no statistically significant associations. When all studies were combined in the dose–response meta-analysis, no statistically significant associations were observed among all participants or when stratified by gender or geographic location, reflecting the conflicting associations reported in the included studies. Further studies are warranted to explore these inconsistent associations.https://www.mdpi.com/2072-6643/12/5/1349coffee consumptionc-reactive proteincross-sectional studiessystematic review and meta-analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Elizabeth D. Moua Chenxiao Hu Nicole Day Norman G. Hord Yumie Takata |
spellingShingle |
Elizabeth D. Moua Chenxiao Hu Nicole Day Norman G. Hord Yumie Takata Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis Nutrients coffee consumption c-reactive protein cross-sectional studies systematic review and meta-analysis |
author_facet |
Elizabeth D. Moua Chenxiao Hu Nicole Day Norman G. Hord Yumie Takata |
author_sort |
Elizabeth D. Moua |
title |
Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis |
title_short |
Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis |
title_full |
Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis |
title_fullStr |
Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis |
title_full_unstemmed |
Coffee Consumption and C-Reactive Protein Levels: A Systematic Review and Meta-Analysis |
title_sort |
coffee consumption and c-reactive protein levels: a systematic review and meta-analysis |
publisher |
MDPI AG |
series |
Nutrients |
issn |
2072-6643 |
publishDate |
2020-05-01 |
description |
Coffee contains bioactive compounds with anti-inflammatory properties, and its consumption may reduce c-reactive protein (CRP) levels, a biomarker of chronic inflammation. A previous meta-analysis reported no overall association between blood CRP level and coffee consumption by modeling the coffee consumption in categories, with substantial heterogeneity. However, the coffee cup volume was not considered. We conducted a systematic review and dose–response meta-analysis investigating the association between coffee consumption and CRP levels reported in previous observational studies. A dose–response meta-analysis was conducted by mixed-effects meta-regression models using the volume of coffee consumed as metric. Eleven studies from three continents were identified using the PubMed database, totaling 61,047 participants. Three studies with the largest sample sizes observed a statistically significant association between coffee and CRP levels, which was inverse among European and United States (US) women and Japanese men (1.3%–5.5% decrease in CRP per 100 mL of coffee consumed) and positive among European men (2.2% increase). Other studies showed no statistically significant associations. When all studies were combined in the dose–response meta-analysis, no statistically significant associations were observed among all participants or when stratified by gender or geographic location, reflecting the conflicting associations reported in the included studies. Further studies are warranted to explore these inconsistent associations. |
topic |
coffee consumption c-reactive protein cross-sectional studies systematic review and meta-analysis |
url |
https://www.mdpi.com/2072-6643/12/5/1349 |
work_keys_str_mv |
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