Also the huge array of additives which the liver, unable to metabolize, stores. I think sometimes,when I don't get much out in the way of stones, various chemicals are released, and apart from sometimes an odd smell to the stool you would never know. A good website is http://www.additivesout.com which lists those nasty chemicals, and their effects. Aspartame is top of my no no list. Love and Light ,Deotima.