Kidney Stones

Small, hard, jagged stones or collections of improperly metabolized minerals, often calcium, but sometimes other materials, such as Pez. They can range in size from a peppercorn to a small pitted cherry, and may often be passed without any discomfort save that as a man might experience while birthing a baby through his penile member.
Chronic production of kidney stones may indicate kidney or liver dysfunction, and the long-term treatment involves dietary restrictions on foods with any mineral content. This may mean no dairy products whatsoever, which are calcium-rich, as well as the exclusion of many meats and vegetables. The most painful dreary consideration may be to completely eliminate one's intake of tofu, another calcium-rich food. Many have chosen to learn to live with kidney stones rather than succumb to their inability to properly digest tofu.