The effect of green tea on patients with type 2 diabetes mellitus: A meta-analysis

source extracted confidence: high 2026-04-09
#humans #blood-glucose #diabetes-mellitus-type-2 #glycated-hemoglobin #insulin-resistance

The effect of green tea on patients with type 2 diabetes mellitus: A meta-analysis

Jia et al., 2024 | Medicine (Baltimore) | Meta Analysis

Citation

Jia Ming-Jie, Liu Xing-Ning, ... Li Hui-Lin. The effect of green tea on patients with type 2 diabetes mellitus: A meta-analysis. Medicine (Baltimore). 2024-Nov-22;103(47):e39702. doi:10.1097/MD.0000000000039702

Abstract

BACKGROUND: To systematically evaluate the effect of green tea on patients with type 2 diabetes. METHODS: A computer search Cochrane, PubMed, Embase, CNKI, Wanfang, VIP, and other Chinese and English databases were conducted for randomized controlled trials of green tea in the treatment of patients with type 2 diabetes. The duration of these trials spanned from the establishment of the database to January 10, 2024. The obtained data were subjected to meta-analysis using Stata15.1 software. A total of 15 articles were included, encompassing 722 patients. RESULTS: The meta-analysis results showed that compared to the control group, green tea intervention significantly improved the improvement of fasting blood glucose (SMD = -0.41, 95% CI: -0.67 to -0.19, P = .001), glycated hemoglobin (SMD = -0.68, 95% CI: -1.15 to 0.21, P = .004) and insulin resistance index (SMD = -0.70, 95% CI: -1.18 to -0.22, P = .005) in the experimental group compared to the control group. The differences were statistically significant (P < .05). CONCLUSION: Green tea significantly improves fasting blood glucose, glycated hemoglobin and insulin resistance in patients with type 2 diabetes.

Key Findings

The meta-analysis results showed that compared to the control group, green tea intervention significantly improved the improvement of fasting blood glucose (SMD = -0.41, 95% CI: -0.67 to -0.19, P = .001), glycated hemoglobin (SMD = -0.68, 95% CI: -1.15 to 0.21, P = .004) and insulin resistance index (SMD = -0.70, 95% CI: -1.18 to -0.22, P = .005) in the experimental group compared to the control group. The differences were statistically significant (P < .05).

Outcomes Measured

  • Requires manual extraction

Population

Field Value
Population type 2 diabetes
Sample Size 722
Age Range See abstract
Condition diabetes

MeSH Terms

  • Humans
  • Blood Glucose
  • Diabetes Mellitus, Type 2
  • Glycated Hemoglobin
  • Insulin Resistance
  • Randomized Controlled Trials as Topic
  • Tea

Evidence Classification

  • Level: Meta Analysis
  • Publication Types: Journal Article, Meta-Analysis
  • Vertical: green-tea-metabolic

Provenance

Source extracted via PubMed E-utilities API on 2026-04-09