Comment

Consumption of high amounts of tea has been associated with lower incidence of stomach cancer. Furthermore, In vitro and in vivo studies have demonstrated the anti-cancer activity of green tea, black tea and their active constituents. However, plasma levels of EGCG after human consumption of green tea products indicate poor absorption of EGCG. We sought to determine if EGCG absorption could be enhanced with red onion (quercetin) supplementation. The results demonstrated that increasing the amount of quercetin given along with EGCG could increase absorption of EGCG from the intestine. Thus, the anticancer activity of the nutrient mixture (EF) can be enhanced with quercetin intake by increasing plasma levels of EGCG.