There is a bad rumor going round that there is a risk of increasing your formaldehyde intake if you drink or consume green tea products. There is no evidence that this is true, but the bagged green tea can absorb formaldehyde.
The health benefits of green tea well documented
Green tea antioxidants disarm free radicals
If you drink only about four cups per day green tea, you can help reduce the risk of cancer. After an 8 year study the American Journal of Epidemiology has concluded that drinking green tea lowers the risk of cancer of the upper digestive tract, colon and rectum.
Oriental scientists, doctors and consumers of green tea have known for years that green tea has many health benefits. While all tea is healthy to drink, Green tea Camellia sinensis contains the highest level of polyphenols (flavonoids), which have the highest antioxidant activity of all teas.