| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Xu, Renfan Bai, Yang Yang, Ke Chen, Guangzhi |
| Abstract | Background The results of human clinical trials investigating the effects of green tea on glycemic control are inconsistent. Methods We conducted a systematic review and meta-analysis of RCTs that examined the effects of green tea supplementation on glycemic control. A literature search in PubMed, Embase, and Cochrane Library databases for RCTs that investigated the effect of green tea consumption on glycemic control was performed up to February 2020. A random-effects model was used to estimate weighted mean difference (WMD) with 95% confidence intervals (CIs). Results Twenty-seven trials involving 2194 subjects were included in the meta-analysis. The pooled results showed that green tea significantly lowered fasting blood glucose by − 1.44 mg/dL (95%CI:-2.26, − 0.62 mg/dL; P < 0.001) with no obvious heterogeneity (I2 = 7.7%). However, green tea consumption did not significantly affect fasting insulin and HbA1c values. The mean differences were − 0.46μIU/mL (95% CI: − 1.10, 0.17μIU/mL; P = 0.21) for fasting insulin and − 0.06%; (95% CI: − 0.12, 0.01%; P = 0.07) for HbA1c concentrations. Heterogeneity was significant in fasting insulin (I2 = 46.8%) and mild in HbA1c (I2 = 1.7%). Conclusions In short-term trials, green tea supplementation significantly reduced fasting glucose, but had no significant effect on fasting insulin and HbA1c. Long-term trials assessing the effects of green tea supplementation on glycemic control are needed. |
| Related Links | https://nutritionandmetabolism.biomedcentral.com/counter/pdf/10.1186/s12986-020-00469-5.pdf |
| Ending Page | 13 |
| Page Count | 13 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 17437075 |
| DOI | 10.1186/s12986-020-00469-5 |
| Journal | Nutrition & Metabolism |
| Issue Number | 1 |
| Volume Number | 17 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2020-07-10 |
| Access Restriction | Open |
| Subject Keyword | Clinical Nutrition Metabolic Diseases Green tea Catechin Glycemic control Meta-analysis |
| Content Type | Text |
| Resource Type | Review |
| Subject | Medicine Endocrinology, Diabetes and Metabolism Nutrition and Dietetics |
| Journal Impact Factor | 3.9/2023 |
| 5-Year Journal Impact Factor | 4.3/2023 |
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