Just to add to this, anything processed is generally not great for health. After going through a lot of gut issues and reading many articles and books here is what I understood..
Avoid things which... * contains more than 3 components which you can't understand. * your grandma doesn't recognise as food. * comes in a plastic cover and doesn't degrade for a long time.
I know this pretty much eliminates the entire super market but if you go through what I have you will rethink everything you put in your mouth.