Green tea extract is one of the best selling weight control supplements on the planet. Most studies show it decreases fat and promotes weight loss, so it is no surprise that it is popular with weight trainers. Brazilian researchers, in a study on rats showed that green tea extract suppressed testosterone secretion. Injecting the animals with human chorionic gonadototropin (HCG) restored the capacity to produce testosterone via the adrenal steroid androstenedione, but did not restore testosterone production in the testes. If these results apply to humans, green tea extract might not be a good weight loss product for guys who workout. Now I know it seems that for everything that's good for you it causes a ''negative'' effect for your body, so just know your body and train and supplement smart.
My 2 cents..
