A comprehensive overview on the effects of green tea on anthropometric measures, blood pressure, glycemic and lipidemic status: An umbrella review and meta meta-analysis study

source extracted confidence: high 2026-04-09
#blood-glucose #blood-pressure #body-weight #dietary-supplements #humans

A comprehensive overview on the effects of green tea on anthropometric measures, blood pressure, glycemic and lipidemic status: An umbrella review and meta meta-analysis study

Neyestani et al., 2022 | Nutr Metab Cardiovasc Dis | Meta Analysis

Citation

Neyestani Tirang R, Nikooyeh Bahareh. A comprehensive overview on the effects of green tea on anthropometric measures, blood pressure, glycemic and lipidemic status: An umbrella review and meta meta-analysis study. Nutr Metab Cardiovasc Dis. 2022-Sep;32(9):2026-2040. doi:10.1016/j.numecd.2022.05.021

Abstract

AIM: The aim of this meta-review was to establish the effects of green tea (GT) intake on some cardiometabolic risk factors including anthropometric measures, blood pressure as well as blood glucose and lipids using evidence from previous systematic reviews and meta-analyses. DATA SYNTHESIS: Articles were identified via searches in PubMed, Embase, and the Cochrane Library, Web of Knowledge database from the index date of each database through January 31, 2021. A total of 13 meta-analyses were finally included in the synthesis. Meta-meta-analysis revealed significant effects of GT on weight and waist circumference with weighted mean difference (WMD) of -0.89 (95% CI -1.43 to -0.34, p < 0.001) and -1.01 (95% CI -1.63 to -0.39, p < 0.001), systolic and diastolic blood pressure, with WMDs of -1.17 (95% CI -2.18 to -0.16) and -1.24 (95% CI -2.07 to -0.4), respectively. There was similar effect on fasting blood glucose (WMD, -1.3, 95% CI -2.09 to -0.51, p < 0.001) but not on other glycemic indicators. The findings also revealed a significant effect size of total cholesterol and LDL-C (WMD -4.93; 95% CI -6.41 to -3.46, p < 0.001, WMD -4.31; 95% CI -6.55 to -2.07, p < 0.001, respectively). CONCLUSION: Regular consumption of GT and probably its bioactive constituents as supplements have beneficial effects on different health aspects including weight, blood pressure, blood glucose and lipids. However, these effects might be influenced by several factors such as the amount and frequency of consumption, health/disease condition and life style including dietary habits and physical activity.

Key Findings

Regular consumption of GT and probably its bioactive constituents as supplements have beneficial effects on different health aspects including weight, blood pressure, blood glucose and lipids. However, these effects might be influenced by several factors such as the amount and frequency of consumption, health/disease condition and life style including dietary habits and physical activity.

Outcomes Measured

  • blood pressure
  • systolic blood pressure
  • diastolic blood pressure

Population

Field Value
Population See abstract
Sample Size See abstract
Age Range See abstract
Condition blood pressure

MeSH Terms

  • Blood Glucose
  • Blood Pressure
  • Body Weight
  • Dietary Supplements
  • Humans
  • Life Style
  • Lipids
  • Tea
  • Waist Circumference

Evidence Classification

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

Provenance

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