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.
There are many situations that can cause kidney stones, with dehydration and too much calcium/calcium-oxalate/oxalate present in the body, as two major factors.oods Rich in Calcium. Foods Rich in Oxalate. These foods need to be eaten in moderation, even if you don't suffer from kidney stones. It is important to drink a lot of fluids, water to be specific, and anything that is freshly squeezed or made from scratch.