Effect of green tea on glycemic control in patients with type 2 diabetes mellitus: A systematic review and meta-analysis
Effect of green tea on glycemic control in patients with type 2 diabetes mellitus: A systematic review and meta-analysis
Asbaghi et al., 2021 | Diabetes Metab Syndr | Meta Analysis
Citation
Asbaghi Omid, Fouladvand Faezeh, ... Abbasnezhad Amir. Effect of green tea on glycemic control in patients with type 2 diabetes mellitus: A systematic review and meta-analysis. Diabetes Metab Syndr. 2021;15(1):23-31. doi:10.1016/j.dsx.2020.11.004
Abstract
BACKGROUND AND AIMS: Several studies have investigated the potential beneficial effects of green tea in patients with type 2 diabetes mellitus (T2DM). Therefore, we aimed to perform a systematic review and meta-analysis of the randomized controlled trials (RCTs) that assessed the effect of supplementary intake of green tea on fasting plasma glucose (FPG), fasting insulin, hemoglobin A1c (HbA1c) and HOMA-IR in patients with T2DM. METHODS: A systematic search was performed in Web of Science, PubMed and Scopus without any language and time restriction up to June 2019, to retrieve the related RCTs. Meta-analysis was carried out using both the random and fixed effects model where appropriate. I2 index was used to evaluate the heterogeneity. RESULTS: Initial search yielded 780 publications. Fourteen articles were eligible. Our meta-analysis indicated that the supplementary intake of green tea had no significant effect on FPG, fasting insulin, HbA1c and HOMA-IR in patients with T2DM. CONCLUSION: Results of the present systematic review and meta-analysis indicated that the supplementary intake of green tea had no significant effect on FPG, fasting insulin, HbA1c and HOMA-IR in patients with T2DM.
Key Findings
Initial search yielded 780 publications. Fourteen articles were eligible. Our meta-analysis indicated that the supplementary intake of green tea had no significant effect on FPG, fasting insulin, HbA1c and HOMA-IR in patients with T2DM.
Outcomes Measured
- Requires manual extraction
Population
| Field | Value |
|---|---|
| Population | type 2 diabetes mellitus |
| Sample Size | See abstract |
| Age Range | See abstract |
| Condition | diabetes |
MeSH Terms
- Diabetes Mellitus, Type 2
- Glycemic Control
- Humans
- Tea
Evidence Classification
- Level: Meta Analysis
- Publication Types: Journal Article, Meta-Analysis, Systematic Review
- Vertical: green-tea
Provenance
- PMID: 33285391
- DOI: 10.1016/j.dsx.2020.11.004
- PMCID: Not in PMC
- Verified: 2026-04-09 via PubMed E-utilities API
Source extracted via PubMed E-utilities API on 2026-04-09