Green tea or green tea extract?

Capsulized extracts of green tea are available, and a typical dosage is 100 to 150 mg 3 times daily of a green tea extract standardized to contain 80% total polyphenols and 50% epigallocatechin gallate. The efficacy of these preparations compared to the consumption of the tea itself is not known at this point.

Green tea is not just beneficial for cancer

Green tea also appears to be beneficial for heart disease: It lowers cholesterol, reduces platelet aggregation (clumping), and lowers blood pressure, all of which may contribute to a decreased risk of heart disease.

Evidence is increasing that consumption of green tea may have beneficial effects on prevention of several cancers in addition to oral cancer, including colon, pancreatic and stomach cancer.

Green tea may stimulate the immune system

immune system to help defend the body against bacterial infections, including dental plaque. Green tea has anti-bacterial properties and stimulates the production of immune cells.

Green tea comes in both caffeinated and decaffeinated forms

Oral cancer rates in China are half that of North America
In China, oral cancer rates are 1/2 that of North America, even though smoking rates - a known risk factor for oral cancer are 3 times higher in China. Each year, more than 30,000 people will be diagnosed with oral cancer, resulting in an estimated 7,800 deaths.
The mouth's oxygen-rich environment connects to several blood vessels which provide a perfect habitat to house oral cancer cells, and in turn allows the cancerous cells to multiply quickly. Ingesting or swishing with green tea introduces the tea's polyphenols to the oral cancer cells lining the mouth. For patients, in order to reap green tea's anticancer benefits, the mouth's mucous lining must be exposed to 4 to 6 cups of green tea a day.