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.

Publication types

  • Meta-Analysis
  • Systematic Review

MeSH terms

  • Blood Glucose* / analysis
  • Blood Glucose* / drug effects
  • Diabetes Mellitus, Type 2* / blood
  • Diabetes Mellitus, Type 2* / drug therapy
  • Glycated Hemoglobin* / analysis
  • Humans
  • Insulin Resistance
  • Randomized Controlled Trials as Topic
  • Tea*

Substances

  • Tea
  • Blood Glucose
  • Glycated Hemoglobin