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.
Reduce your chances of redeveloping a calcium stone, the most common type of kidney stones. 1  Limit foods high is oxalate if you have experienced calcium oxalate stones. 2  Spinach, chocolate, beets and rhubarb all are high in oxalate. 3  Beans, green peppers, tea, and peanuts also contain oxalate.