I have an old friend who couple of years ago made a decision to radically change his way of life. What he did is almost unreal for the rest of us. He simply stopped eating food we are all familiar with and instead he eats only fruits, vegetables and various grains and nuts. All that in its raw and natural form without any cooking, baking or frying. Of course as a practical man (he is a math teacher in my wife's school) he didn't do this over night and instead used methodical approach so his switch from "ordinary" food to this final stage of the most strict vegetarian diet possible lasted couple of years in order to adapt his organism better and to avoid potential dangers on the way. Contrary to other vegetarians I know he didn't do this because of some illness or because his organism is not capable of digesting meat and thermally processed food. Instead this was an act of free will and strong belief that he is doing a good thing. I strongly admire him for this and...