If so, then you've seen oxidized and destroyed plastic molecules. These are just common examples of molecules being changed and becoming less functional because of oxidation. Well, on a basic level, the same thing can happen in your body.
Oxidation can damage vital organs and retard critical functions in our body, causing disease.
This is a normal process of cell turnover and aging. In fact, cardiovascular disease, asthma, cataracts, lupus, arthritis, skin disorders, and especially cancer have all been associated with high rates of oxidation. Well, there are oxidants all around us - in our environment and even our food. It's very hard to limit our exposure to oxidants. In fact, when an atom or molecule becomes oxidized, it can produce other substances called free radicals, which in turn can oxidize other molecules, and the damage continues.