I want to give you a sense of where this could lead through some lovely work by Steve Kliewer of Glaxo-Smith-Kline in Research Triangle Park, North Carolina. He reasons that interactions between herbs and drugs, like interactions we’re learning between drugs and drugs, relate to the fact that these drugs interact with a basic chemoprevention system that we, as animals, have evolved over millions of years to have to protect us from things that we eat in the environment that may be dangerous to us.