Along the journey of discovery, we undoubtedly carry concepts and ideas with us that we have long accepted as true.  As we look closer, we may discover that some of the concepts we previously thought to be true are in reality incomplete.  If this has happened to you, then welcome to the world of science and discovery.  Being open to new discoveries always changes the way we perceive things.  On this journey, we have seen that oxidants, traditionally thought to be bad for us, are not only good for us but they are fundamental signaling molecules in our cells and tissues.  All of the evidence indicates that we need oxidants in order to live healthy lives.  Let’s take a closer look at this concept and find a few examples of the things that oxidants do that make them essential to life.