About UNHCR. The Office of the United Nations High Commissioner for Refugees was established on December 14, 1950 by the United Nations General Assembly. The agency is mandated to lead and co-ordinate international action to protect refugees and resolve refugee problems worldwide.
1 If you tend to form calcium oxalate stones, your doctor may recommend restricting foods rich in oxalates. 2  These include rhubarb, beets, okra, spinach, Swiss chard, sweet potatoes, nuts, tea, chocolate and soy products.
Bananas are a low-oxalate food. Kidney stones are small, hard, sharp crystals that can lodge in the kidneys or the ureter, which is the tube that carries urine from the kidneys to the bladder, and are potentially very painful. The most commonly occurring stones are made of calcium combined with either phosphate or oxalate.