Decaffeinated Green Tea has powerful antioxidant activity, and may be used for the treatment or prevention of cancer, for collagen formation, arteriosclerosis, cholesterol and triglyceride levels, high blood pressure, gingivitis (periodontal disease), immune response, and infection. Green Tea is cultivated in farms throughout the world, but mainland China is still known to this day as the region where some of the highest quality green teas in the world are grown. The varying taste of green tea is a reflection of many factors: soil, altitude, weather and farming methods. Green Tea is a rich source of plant antioxidants. Studies have suggested that daily consumption of green tea may reduce the risk of certain types of cancer including stomach and throat. Green Tea contains Vitamin-C the average amount in two small cups of brewed tea is nearly equal to that in a cup of orange juice. Green tea also has antibacterial properties which was discovered by the ancient Chinese who used it to purify their drinking water.