I would like to enhance this thread as DruggedPanda posted an interesting link(which also really shocked me).
Many things we consume can have harsh side effects as we cannot be sure what is exacly included. We should think about how to counter hidden ingredients to make sure we stay intact.
A good example for this is fluorid, most contras to this are quite simple.. as many articles show: it makes us dump. But in detail: it blocks our pineal gland.
Also meat has much fluorides when selled processed(for example chicken nuggets), so when we want to get rid of fluorides and other chemicals etc. (things that restrain us or parts of our body). We need to do research to acknowledge the exact substances that get in our food through the manufacture and then the other side: we need to learn how to eliminate the feature of these food additive, which influence us.