The Paleo diet focuses on foods that are free of natural, industrial processing. According to the nutrition scientist, the time since prehistoric times has not been enough for our bodies to adapt to foods treated with refined processes. Digestion of cereals produced by agriculture is also more difficult than that of free-growing crops. Most of the time you can utilize foods without storage that do not go through lengthy preparation processes. The only exceptions to this are meat and fish, which are not placed on your plate raw. However, even here, think of the simplest steaming and grilling - forget about cold cuts crowded with additives during your diet. Sugar, salt and flour alone do not occur in nature without artificial intervention. The prehistoric man in the woods and fields didn't miss it either, so he easily avoided the extra pounds. Neither toxins nor edema put a strain on his body, nor was he threatened by diabetes or high blood pressure.