Oxygen has two aspects, one beneficial and one harmful. It plays a key role in metabolism, but can also be an unhealthful agent. As a free radical, oxygen in the body can oxidize cell membranes, which will damage DNA and the lipids (fats). This can lead to diseases like cancer, cardio-vascular disease and diabetes. Lipid peroxide created by lipids ( fats) combined with oxygen tends to accumulate in the body and create aging pigmentation. One way to slow aging is to prevent the production of active oxygen and lipid peroxide in the body. Consumption of antioxidants such as vitamins E and C promises longer life. We already know that green tea is rich in vitamins E and C. In addition, Prof. Okuda has demonstrated that catechin in green tea is a far stronger antioxidant than vitamin E (about 20 times stronger) Prof. T. Okada et al., Chem. Pharm. Bull (1983)
In The News: Tea: The Elixir of a Long Life.