Green Tea and glucose tolerance?

The results of a recent study suggest that supplementation with 3 capsules of green tea extract (total: 890 +/- 13 mg polyphenols and 366 +/- 5 mg EGCG) increased fat oxidation, insulin sensitivity, and glucose tolerance in young healthy men.

“BACKGROUND: Green tea consumption is reportedly associated with various health-promoting properties. For example, it has been shown to promote fat oxidation in humans at rest and to prevent obesity and improve insulin sensitivity in mice.”

“CONCLUSIONS: Acute GTE ingestion can increase fat oxidation during moderate-intensity exercise and can improve insulin sensitivity and glucose tolerance in healthy young men.”


  1. Venables MC, Hulston CJ, Cox HR, Jeukendrup AE.  Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.  Am J Clin Nutr. 2008 Mar;87(3):778-84.

Written by 

Dr. Jarret Morrow, MD CCFP, is a licensed family physician currently practising in Edmonton, AB. He has a declared special interest in cosmetic dermatology.

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