Green tea catechins with or without caffeine and energy expenditure: a meta-analysis
Hursel R, Viechtbauer W, Dulloo AG, Tremblay A, Tappy L, Rumpler W, Westerterp-Plantenga MS
Published in Obesity Reviews
Methodology
Meta-analysis of randomized controlled trials measuring 24-hour energy expenditure and fat oxidation after catechin or catechin-caffeine mixtures.
Key Findings
Catechin-caffeine mixtures significantly increased 24-hour energy expenditure by roughly 4-5%, while caffeine alone had a smaller effect and habitual caffeine intake blunted the response.
Conclusions
Green tea catechins produce a modest but measurable thermogenic effect.
Limitations
Small absolute effect; heterogeneous dosing.
Supplements Studied
Catechin-caffeine mixtures significantly increased 24-hour energy expenditure by roughly 4-5%
Outcomes Measured
Catechin-caffeine mixtures significantly increased 24-hour energy expenditure by roughly 4-5%
Study Details
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