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.
Kidney stones formed of Calcium oxalate are usually the result of eating high-oxalate foods, such as chocolate, berries (including cranberries), dark leafy greens (such as spinach) and wheat or bran foods. If you consume these foods on a regular basis, there is a chance that you have an oxalate stone.