In conclusion, GTE incorporated into meat patties in doses realistic for addition to processed foods only leads to a short-term change in plasma antioxidant capacity and has no long-term effects on oxidation parameters within the blood or urine compartments in smokers or in non-smokers. The study can therefore be seen as a 10 weeks controlled study with dietary depletion of all food antioxidants derived from fruits and vegetables, except for carrots and potatoes. During the depletion we observed a decrease in oxidative damage to proteins, DNA, and lipids, concomitantly with a major reduction in plasma ascorbate and minor changes in other vitamins and in anti- oxidant enzyme activities.
Green tea extract only affects markers of oxidative status postprandially: lasting antioxidant effect of flavonoid-free diet from http://journals.cambridge.org/actio...ge=online&aid=898588&fileId=S0007114502000673
So, no effect on fasting values, but I didn't understand whether there could still be a benefit in the short-term post-prandially when the plant anti-oxidants are still circulating.