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Green tea consumption associated with lower LDL and total cholesterol

Health & Medicine Daily

2020 JUN 01 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Daily -- Researchers detail new data in Cholesterol. According to news reporting out of Wuhan, People’s Republic of China, by NewsRx editors, research stated, “Strong epidemiologic evidence indicates that green tea intake is protective against hyperlipidemia; however, randomized controlled studies have presented varying results. In the present study, we aimed to conduct a literature review and meta-analysis to assess the effect of green tea on blood lipids.”

Financial support for this research came from National Natural Science Foundation of China.

Our news journalists obtained a quote from the research from the Huazhong University of Science and Technology, “PubMed, Embase, and the Cochrane Library were electronically explored from inception to September 2019 for all relevant studies. Random effect models were used to estimate blood lipid changes between green tea supplementation and control groups by evaluating the weighted mean differences (WMD) with 95% confidence intervals (CIs). The risk of bias for study was assessed using the Cochrane tool. Publication bias was evaluated using funnel plots and Egger’s tests. Thirty-one trials with a total of 3321 subjects were included in the meta-analysis. In general, green tea intake significantly lowered the total cholesterol (TC); WMD: -4.66 mg/dL; 95% CI: -6.36, -2.96 mg/dL; p<0.0001) and low-density lipoprotein (LDL) cholesterol (WMD:-4.55 mg/dL; 95% CI: -6.31, -2.80 mg/dL; p<0.0001) levels compared with those in the control. Green tea consumption did not affect high-density lipoprotein (HDL) cholesterol; however, it reduced the triglycerides compared with that in the control (WMD: -3.77 mg/dL; 95% CI: -8.90, 1.37 mg/dL; p=0.15). In addition, significant publication bias from funnel plots or Egger’s tests was not evident.”

According to the news editors, the research concluded: “Collectively, consumption of green tea lowers LDL cholesterol and TC, but not HDL cholesterol or triglycerides in both normal weight subjects and those who were overweight/obese; however, additional well-designed studies that include more diverse populations and longer duration are warranted.”

For more information on this research see: Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials. Nutrition Journal, 2020;19(1):48. (BioMed Central - http://www.biomedcentral.com/; Nutrition Journal - www.nutritionj.com)

Our news journalists report that additional information may be obtained by contacting K. Yang, Division of Cardiology, Dept. of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China. Additional authors for this research include R. Xu, S. Li, M. Dai and G. Chen.

The direct object identifier (DOI) for that additional information is: https://doi.org/10.1186/s12937-020-00557-5. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

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