Green Tea and Weight Loss

Research Summary (see below for details): ECGC (the active component of Green Tea) can accelerate weight loss; however, expect to see bigger results with a tape measure than a scale and the biggest results from long term use of EGCg.  Also, EGCg combined with caffeine may be the most effective combination. 

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EGCg may promote weight loss by increasing the metabolism of fats by the liver (thermogenic effect) and  inhibiting lipase (fat absorption enzyme) in the digestive tract.

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A double blind study showed that only EGCg was associated with weight and fat loss (not the other green tea catechins). 

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A Japanese epidemiological study indicates habitual green tea consumption corresponded to lower % Body Fat and smaller waist to hip ratios.  The study grouped people into two groups: those who habitually drank at least one cup of green tea per week and those who didn't.  The group who habitually drank at least 1 cup of green tea per week had 19.6% less body fat than those who didn't.  The study also found that higher green tea consumption was associated with lower body fat.

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A double blind study indicated EGCg consumption increased fat oxidation by an additional 241 fat calories/day.  Study participants took 270 mg EGCg per day plus 150 mg caffeine.

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A double blind study reported the effect of 690 mg green tea catechins  per day over a 12 week period. EGCg consumption was associated with a weight loss of 2.4 pounds, a body fat loss of 7.7%, and a loss of 1 inch around the waist.

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Double-blind study with 80 subjects found that the group receiving 588 catechins per day day showed a significant weight loss of 3.7 lbs in 12 weeks

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Double blind Japanese study of dieters showed that a high catechin intake  resulted in a significant decrease in body weight, body mass index, waist circumference, body fat ratio, abdominal fat, glucose, insulin and total cholestrol while a low catechin intake only reduced weight, body mass index and insulin.

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Last Updated 10/13/2008