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.
1 Milk, cheese, and yogurt are all good sources of calcium. 2  If you had an oxalate kidney stone, your doctor may ask you to limit certain foods that have a lot of oxalate, such as dark green vegetables, nuts, and chocolate.