The facts are simple. The only way to lose weight is to consume fewer calories than you burn during the day. That doesn't mean that the extract is worthless. It may actually help you burn more calories.
There is a group of researchers Slimming Factor G1 in Japan who say that drinking five cups per day can burn 70 to 80 extra calories. Dr. Nicholas Perricone, a dermatologist turned self-proclaimed anti-aging specialist, has said that drinking green tea instead of coffee will allow you to lose 10 pounds in six weeks. These statements may seem to support each other, but not really. Dr. Perricone seems to have his decimal point in the wrong place.
There are 3500 calories in a pound of fat. So, in order to lose 10 pounds of fat in six weeks, you would need to burn about 800 extra calories per day. In order to lose one pound in six weeks, you would only need to burn about 80, which is what the Japanese researchers slimming factor Australia are saying.