The title is the advice of my wife's urologist. When there is water the kidneys are active. Kidney stones are usually formed when the kidneys are often inactive which means the person is not drinking water regularly. That means it is not enough to drink 8 glasses of water in a day. What's more important is the frequency of drinking like half a glass every 30 minutes or so. I guess that is a good advice but I have to admit that I am not doing the drinking religiously.