Does green tea speed up your metabolism?

According to some research, green tea can speed up your metabolism and help you burn a few dozen calories per day.

A 2005 study that was published in the "American Journal of Clinical Nutrition" supports that the volunteers who drank tea rich in catechins lowered their body mass index and their body fat percentage. However,
a review of all studies which was published again in the American Journal of Clinical Nutrition in 2010, found that the catechins inside green tea do not contribute to fat loss. The only study that had showed a statistically significant effect was a study which had used a combination of catechins and caffeine. So, it seems that it’s the caffeine that speeds up metabolism and not the catechins. This means that drinking coffee may be a more effective way to increase your metabolism than drinking tea.

So, does green tea speed up your metabolism? The effects of green tea on metabolism are minimal at best.