En gjennomgang av studier utført på sammenhengen mellom grønn te og vekttap / vektkontroll.



Ut av 49 studier var det 11 studier som passet kriteriene og gav nok kvalitetsopplysninger til å være med i metaanalysen. Resultatene og konklusjonen viser at grønn te har en positiv effekt på fettforbrenning med følgende vekttap og vektkontroll etter diett. 

"The effects of green tea on weight loss and weight maintenance: a meta-analysis.
Hursel R, Viechtbauer W, Westerterp-Plantenga MS.

Department of Human Biology, Nutrition and Toxicology Research Institute Maastricht (NUTRIM) Maastricht University, Maastricht, The Netherlands. rick.hursel@hb.unimaas.nl
INTRODUCTION: Different outcomes of the effect of green tea on weight loss (WL) and weight maintenance (WM) have been reported in studies with subjects differing in ethnicity and habitual caffeine intake. PURPOSE: To elucidate by meta-analysis whether green tea indeed has a function in body weight regulation. METHODS: English-language studies about WL and WM after green tea supplementation were identified through PubMed and based on the references from retrieved articles. Out of the 49 studies initially identified, a total of 11 articles fitted the inclusion criteria and provided useful information for the meta-analysis. Effect sizes (mean weight change in treatment versus control group) were computed and aggregated based on a random-effects model. The influence of several moderators on the effect sizes was examined. RESULTS: Catechins significantly decreased body weight and significantly maintained body weight after a period of WL (microcirc=-1.31 kg; P<0.001). Inhibition of this effect by high habitual caffeine intake (>300 mg per day) failed to reach significance (microcirc=-0.27 kg for high and microcirc=-1.60 kg for low habitual caffeine intake; P=0.09). Also, the seemingly smaller effect of catechins in Caucasian (microcirc=-0.82 kg) subjects compared with Asians (microcirc=-1.51 kg; P=0.37) did not reach significance. Interaction of ethnicity and caffeine intake was a significant moderator (P=0.04). CONCLUSIONS: Catechins or an epigallocatechin gallate (EGCG)-caffeine mixture have a small positive effect on WL and WM. The results suggest that habitual caffeine intake and ethnicity may be moderators, as they may influence the effect of catechins."

Studie viser at inntak av grønn te øker forbrenningen av karbohydrater og fett!

Les studien her: http://www.ajcn.org/cgi/content/full/70/6/1040

Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans1,2,3

Abdul G Dulloo, Claudette Duret, Dorothée Rohrer, Lucien Girardier, Nouri Mensi, Marc Fathi, Philippe Chantre and Jacques Vandermander
1 From the Department of Physiology, Faculty of Medicine, University of Geneva; Geneva University Hospital; and Laboratoires Arkopharma, Nice, France.

2 Supported in part by Arkopharma Laboratories and by the Swiss National Science Research Fund.

3 Address reprint requests to AG Dulloo, Institute of Physiology, University of Fribourg, Rue de Musée 5, CH-1700 Fribourg, Switzerland

Sjekk ut vårt høykonsentrerte grønn te produkt: GREEN ENERGY BURN