I just spent Christmas passing kidney stones and while I have tried to drink more water I guess I need to make more of an effort. Take it from me, if you have never passed kidney stones, you don't want to find out what it's like. I don't see what in my diet causes these problems. (it's happened before also) I don't drink soda pop or anything strange. Maybe someone has suggestions? I used lemon and apple cider vinegar to help flush them.