I found this on the internet re green tea. Thought it might interest you:

Weight loss experts theorize that green tea may reduce the rate and amount of carbohydrate absorption and thereby promote the burning of fat (without causing harm to the body). In one study, 60 overweight, middle-aged women were placed on a diet supplying 1,800 calories per day. One group took green tea supplements with all three meals. A second group was given a placebo (“dummy” pill.) The results? After two weeks, the women taking the green tea pills lost twice as much weight as women in the control group. On average, after a month, the green tea users tripled the weight loss of the other group. How does this work? Polyphenols in green tea react with amylase, an enzyme in saliva that digests carbohydrates; they also have an affect on the digestion of carbohydrates farther along in the digestive tract, causing a slow release of carbohydrates. This prevents a sharp rise of blood insulin levels, which tends to cause fat burning instead of fat storage.

Dr. Tsang-do Houng, a researcher at the University os Beijing and graduate of Harvard Medical School, says, “A cup twenty minutes before a meal makes you feel filled up and kills hunger pangs.” Studies show that taking green tea twice a day can help curb one’s appetite.

A study conducted by the University of Geneva’s Dr. Abdul Dulloo and colleagues suggests the caffeine in green tea interacts with the flavonoids in green tea, which increases the rate of calorie burning -- including fat calorie burning.

Green tea contains saponins, a substance that ties up the fat from the contents of the intestines and prevents them from entering the bloodstream. Therefore, the body doesn’t have to store excess calories as fat deposits.The caffeine content of green tea (11 mg per 1/2 tsp. of Mr. Green Tea seasoning and 15-100 mg per cup of green tea) causes an increase in BMR called thermogenic effect. It may boost weight loss efforts by helping the body burn more calories.

Another thing to note that I found on another web site was that green tea provides 70% of our daily floride!!!

Also black and green varieties of teas do not contain any carbs. Check out Atkins Hidden Carbs under Low Carb Tips.

Cheers