Because science probably haven’t discover all the enzymes, vitamins and biological functions of hormones and minerals, it is safer to use foods that are not processed and grown organically, which obey the laws of nature. This diet has helped humans thousands of years before any science developed. In this way, we get all the vitamins and enzymes, both known and unknown ones in a prefect composition and combination. These vital substances can be damaged and eliminated by for example refining. So until we know better, run the precautionary principle – as natural food as possible.