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Black tea consumption and serum cholesterol concentration: Systematic review and meta-analysis of randomized controlled trials.
Clin Nutr 2015; 34(4):612-9CN

Abstract

BACKGROUND & AIMS

The results of randomized controlled trials in relation to the effect of regular black tea consumption on serum cholesterol concentration were inconsistent. We aimed to investigate and quantify the effect of black tea consumption on serum concentrations of total, LDL and HDL cholesterol.

METHODS

We systematically searched and identified relevant literatures in PubMed, Scopus and the Cochrane Library. Inclusion and exclusion of studies, data extraction, quality assessment and meta-analysis were conducted according to the PRISMA statement.

RESULTS

Ten eligible studies with 411 participants were identified in the present meta-analysis. No significant heterogeneity was found between studies. Consumption of black tea significantly reduced LDL cholesterol concentration (-4.64 mg/dL; 95% CI: -8.99, -0.30 mg/dL; P = 0.036). No remarkable change was detected in total cholesterol (-2.04 mg/dL; 95% CI: -6.43, 2.35 mg/dL; P = 0.363) or HDL cholesterol (-1.15 mg/dL; 95% CI: -3.04, 0.75 mg/dL; P = 0.236). Subgroup analysis showed that the lowering effect on LDL cholesterol was more effective in subjects with higher cardiovascular risk.

CONCLUSIONS

Black tea consumption significantly lowered serum concentration of LDL cholesterol, especially in subjects with higher cardiovascular risk. Black tea intake did not impose obvious effect on serum concentrations of total and HDL cholesterol.

Authors+Show Affiliations

Department of Food Science and Nutrition, Zhejiang University, Hangzhou, People's Republic of China.Department of Food Science and Nutrition, Zhejiang University, Hangzhou, People's Republic of China.Department of Food Science and Nutrition, Zhejiang University, Hangzhou, People's Republic of China.Department of Food Science and Nutrition, Zhejiang University, Hangzhou, People's Republic of China.Department of Food Science and Nutrition, Zhejiang University, Hangzhou, People's Republic of China. Electronic address: duoli@zju.edu.cn.

Pub Type(s)

Journal Article
Meta-Analysis
Research Support, Non-U.S. Gov't
Review
Systematic Review

Language

eng

PubMed ID

24972454

Citation

Zhao, Yimin, et al. "Black Tea Consumption and Serum Cholesterol Concentration: Systematic Review and Meta-analysis of Randomized Controlled Trials." Clinical Nutrition (Edinburgh, Scotland), vol. 34, no. 4, 2015, pp. 612-9.
Zhao Y, Asimi S, Wu K, et al. Black tea consumption and serum cholesterol concentration: Systematic review and meta-analysis of randomized controlled trials. Clin Nutr. 2015;34(4):612-9.
Zhao, Y., Asimi, S., Wu, K., Zheng, J., & Li, D. (2015). Black tea consumption and serum cholesterol concentration: Systematic review and meta-analysis of randomized controlled trials. Clinical Nutrition (Edinburgh, Scotland), 34(4), pp. 612-9. doi:10.1016/j.clnu.2014.06.003.
Zhao Y, et al. Black Tea Consumption and Serum Cholesterol Concentration: Systematic Review and Meta-analysis of Randomized Controlled Trials. Clin Nutr. 2015;34(4):612-9. PubMed PMID: 24972454.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Black tea consumption and serum cholesterol concentration: Systematic review and meta-analysis of randomized controlled trials. AU - Zhao,Yimin, AU - Asimi,Sailimuhan, AU - Wu,Kejian, AU - Zheng,Jusheng, AU - Li,Duo, Y1 - 2014/06/13/ PY - 2013/11/25/received PY - 2014/06/06/revised PY - 2014/06/09/accepted PY - 2014/6/29/entrez PY - 2014/6/29/pubmed PY - 2016/3/26/medline KW - Black tea KW - Cholesterol KW - Meta-analysis KW - Systematic review SP - 612 EP - 9 JF - Clinical nutrition (Edinburgh, Scotland) JO - Clin Nutr VL - 34 IS - 4 N2 - BACKGROUND & AIMS: The results of randomized controlled trials in relation to the effect of regular black tea consumption on serum cholesterol concentration were inconsistent. We aimed to investigate and quantify the effect of black tea consumption on serum concentrations of total, LDL and HDL cholesterol. METHODS: We systematically searched and identified relevant literatures in PubMed, Scopus and the Cochrane Library. Inclusion and exclusion of studies, data extraction, quality assessment and meta-analysis were conducted according to the PRISMA statement. RESULTS: Ten eligible studies with 411 participants were identified in the present meta-analysis. No significant heterogeneity was found between studies. Consumption of black tea significantly reduced LDL cholesterol concentration (-4.64 mg/dL; 95% CI: -8.99, -0.30 mg/dL; P = 0.036). No remarkable change was detected in total cholesterol (-2.04 mg/dL; 95% CI: -6.43, 2.35 mg/dL; P = 0.363) or HDL cholesterol (-1.15 mg/dL; 95% CI: -3.04, 0.75 mg/dL; P = 0.236). Subgroup analysis showed that the lowering effect on LDL cholesterol was more effective in subjects with higher cardiovascular risk. CONCLUSIONS: Black tea consumption significantly lowered serum concentration of LDL cholesterol, especially in subjects with higher cardiovascular risk. Black tea intake did not impose obvious effect on serum concentrations of total and HDL cholesterol. SN - 1532-1983 UR - https://www.unboundmedicine.com/medline/citation/24972454/full_citation L2 - https://linkinghub.elsevier.com/retrieve/pii/S0261-5614(14)00167-8 DB - PRIME DP - Unbound Medicine ER -