Stella Trim just have to use your common sense. It is what man has always eaten. Foods such as meat, fish, vegetables, eggs, butter, etc. It is easy. Just think if the product you're buying has been eaten forever. Another tip is to look at the ingredients label of the products. Ideally, the item should not have a label, but if you have it, make sure you have the shortest list possible. (A more processes, more ingredients)