green tea and Reduced Body Weight

Research synthesisModerate evidenceSmall effect4 studies · 3 beneficial · 1 neutral · 0 harmful

Across 4 studies, 3 reported beneficial effects of green tea on body weight reduction, with predominantly small effect sizes. The evidence includes a high-quality systematic review in adults with MASLD (moderate effect) and meta-analyses in overweight/obese individuals (small effect), while a meta-analysis in postmenopausal women found no significant effect. The most consistent effect was a small weight loss of approximately 0.74 kg.

Studied populations: adults with MASLD, postmenopausal women, overweight/obese individuals

Caveats: Effect sizes were modest (weight loss ~0.74 kg). The only neutral study was in postmenopausal women, suggesting potential population-specific variability. Most studies were meta-analyses with varying quality; the highest-quality study (systematic review) reported beneficial effects but with substantial heterogeneity. Doses, forms, and study durations were not consistently reported, limiting the ability to specify optimal protocols.

Generated Jul 15, 2026

Safety in these studies

Overall tolerabilityReported
The included studies showed substantial heterogeneity in reported outcomes, which primarily focused on hepatic health, body weight, adverse events, glycemic control, blood lipids, and body composition.
from: Evaluating Bioactive-Substance-Based Interventions for Adults with MASLD: Results from a S

4 of 4 papersPopulation:

Evaluating Bioactive-Substance-Based Interventions for Adults with MASLD: Results from a Systematic Scoping Review.
- 2025-01-26
- Systematic Review · n = 4,572
- Nutrients 17(3)
- - Deepa Handu
  - Kim Stote
  - Tami Piemonte
- PubMed: 39940310
- DOI: 10.3390/nu17030453
6 Insights on
- Reduced Body Weight
- High evidence
- Rigorous Journal
- Clinical
The included studies showed substantial heterogeneity in reported outcomes, which primarily focused on hepatic health, body weight, adverse events, glycemic control, blood lipids, and body composition.
Effect
Beneficial
Effect size
Moderate
Significant
Yes
Effects of green tea use on the metabolic profile of postmenopausal women: systematic review and meta-analysis.
- 2026-06
- Meta-Analysis · n = 109
- European journal of nutrition 65(4)
- - Isabella Heloísa Rodrigues Zago
  - Laura Colonetti
  - Eduarda Letícia Balbinot
  - Igor Specht Taschetto
  - Antonio José Grande
  - Maria Inês da Rosa
  - Tamy Colonetti
- PubMed: 42228178
- DOI: 10.1007/s00394-026-04005-8
6 Insights on
- Reduced Body Weight
- High evidence
- Rigorous Journal
- Elderly
However, no statistically significant effects were observed for the other evaluated outcomes.
Effect
Neutral
Effect size
Small
Significant
No
Dose
Not specified in abstract
Effects of green tea supplementation on obesity indices and adipokines in adults: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials.
- 2025-05-06
- Meta-Analysis
- International journal of food sciences and nutrition 76(4)
- - Mohammad Jafar Dehzad
  - Hamid Ghalandari
  - Fatemeh Sadat Fahimzad
  - Zahra Maghsoudi
  - Maede Makhtoomi
  - Mehran Nouri
  - Moein Askarpour
- PubMed: 40326418
- DOI: 10.1080/09637486.2025.2496400
6 Insights on
- Reduced Body Weight
- High evidence
Green tea supplementation reduced BW (WMD: -0.74 kg; 95% CI: -0.97, -0.51)
Effect
Beneficial
Effect size
Small
Significant
Yes
Does green tea catechin enhance weight-loss effect of exercise training in overweight and obese individuals? a systematic review and meta-analysis of randomized trials.
- 2024-09-30
- Meta-Analysis
- Journal of the International Society of Sports Nutrition 21(1)
- - Farhad Gholami
  - Jose Antonio
  - Mohadeseh Iranpour
  - Jason Curtis
  - Flavia Pereira
- PubMed: 39350601
- DOI: 10.1080/15502783.2024.2411029
7 Insights on
- Reduced Body Weight
- High evidence
- Clinical
EX+GT versus EX+P had a small and consistent effect on weight [Standardized mean difference (SMD) = -0.30, CI: -0.53 to -0.07]
Effect
Beneficial
Effect size
Small
Significant
Yes

green tea and Reduced Body Weight

Evaluating Bioactive-Substance-Based Interventions for Adults with MASLD: Results from a Systematic Scoping Review.

Effects of green tea use on the metabolic profile of postmenopausal women: systematic review and meta-analysis.

Effects of green tea supplementation on obesity indices and adipokines in adults: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials.

Does green tea catechin enhance weight-loss effect of exercise training in overweight and obese individuals? a systematic review and meta-analysis of randomized trials.