---
title: "Effect of green tea consumption on body weight and body…"
description: "Green tea and its extracts do not significantly impact body weight in overweight or obese adults, and their minor effect on body fat percentage is not…"
url: "https://magellanlongevity.com/study/d24558988.md"
canonical: "https://magellanlongevity.com/study/d24558988.html"
html: "https://magellanlongevity.com/study/d24558988.html"
type: "study"
study_key: "d24558988"
journal: "Nutr Hosp"
year: 2014
pmid: "24558988"
doi: "10.3305/nh.2014.29.3.7118"
citations: 1
updated: 2026-09-02
author: "Gabriel Radu, DO"
author_credentials: "Physiatrist (PM&R). NY medical license 275110. NPI 1376861765."
publisher: "Magellan Longevity"
content_format: "markdown"
---

# Effect of green tea consumption on body weight and body composition; systematic review and meta-analysis

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## Citation

| Field | Value |
| --- | --- |
| Journal | Nutr Hosp |
| Year | 2014 |
| PMID | [24558988](https://pubmed.ncbi.nlm.nih.gov/24558988/) |
| DOI | [10.3305/nh.2014.29.3.7118](https://doi.org/10.3305/nh.2014.29.3.7118) |
| Study key | d24558988 |

## Takeaway

Green tea and its extracts do not significantly impact body weight in overweight or obese adults, and their minor effect on body fat percentage is not clinically meaningful.

## The question

Does green tea consumption or its extracts (caffeine and catechins) affect body weight and body composition in overweight or obese adults?

## Hypothesis

Caffeine and catechins in green tea may have a thermogenic effect that promotes weight and body fat loss.

## Methods

A systematic review and meta-analysis of randomized controlled trials (RCTs) published between 2000 and 2013 was conducted. Studies included were parallel-group, randomized, double-blind, with a minimum 12-week follow-up, in healthy individuals aged 18 or older with a BMI of 25-40 kg/m2. Data was analyzed using the random effects model with a 95% confidence interval, and statistical significance was set at p < 0.05. Homogeneity was assessed using the I2 index.

## Results

Out of 154 retrieved studies, five were included in the quantitative analysis. No statistically significant mean difference was found for weight loss in Asian individuals (-0.81 kg), Caucasians (-0.73 kg), or the sample as a whole (-0.78 kg). Similarly, no statistically significant decrease was observed in BMI for Asian individuals (-0.65), Caucasians (-0.21), or the overall sample (-0.31 kg), nor for waist circumference (0.08 cm) or hip circumference. A small, statistically significant decrease in fat mass percentage (FM%) was found for the overall sample (-0.76), but not for Asian individuals (-0.76) or Caucasians (-0.76) as subgroups.

## Conclusion

Green tea or its extracts do not have a statistically significant effect on the weight of overweight or obese adults. While a small, statistically significant decrease in the percentage of fat mass was observed, this effect is not considered clinically relevant.

## Limitations

The statistically significant effect on fat mass percentage was not clinically relevant. The meta-analysis included only five studies in its quantitative analysis.

## Verbatim from the abstract

> Caffeine and catechins in green tea may have a thermogenic effect favoring weight and body fat loss

## Mean Difference in Fat Mass Percentage (FM%)

| Measure | Mean Difference (FM%) |
| --- | --- |
| Asian individuals | -0.76 |
| Caucasians | -0.76 |
| Overall sample | -0.76 |

*Mean difference in fat mass percentage (FM%) for different subgroups and the overall sample. Only the overall sample showed a statistically significant decrease.*

## Where this study is used on Magellan

This paper is one of the citations behind the evidence grade on the pages below. Grades are assigned from the published research and are independent of affiliate commissions.

| Compound or device | Evidence grade | Graded pages |
| --- | --- | --- |
| Green Tea EGCG Extract | Moderate evidence | [Green Tea EGCG Extract](https://magellanlongevity.com/p/106.md) |

## Reference

1. **Effect of green tea consumption on body weight and body composition; systematic review and meta-analysis**
   Nutr Hosp 2014 · [PMID 24558988](https://pubmed.ncbi.nlm.nih.gov/24558988/) · [DOI 10.3305/nh.2014.29.3.7118](https://doi.org/10.3305/nh.2014.29.3.7118)

   > Caffeine and catechins in green tea may have a thermogenic effect favoring weight and body fat loss

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## Scope and disclosures

Educational information, not medical advice. Nothing here is intended to diagnose, treat, cure, or prevent any disease. Talk to your physician before starting any supplement or device, especially if you are pregnant, nursing, or taking medication.

Editorial firewall: evidence grades are assigned from the published research and are independent of any affiliate commission. As an Amazon Associate, Magellan Longevity earns from qualifying purchases.

Reviewed for accuracy by a board-certified physician (DO).