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.
2. If kidney stones are hereditary, you should steer clear of foods that contain oxalates (the material that makes up the actual stones). Rhubarb is one food thatâs particularly high in oxalates.
Kidney Stones: Preventing Kidney Stones Through Diet. If you have kidney stones, your doctor or dietitian may talk with you about an eating plan to help prevent new stones. The most common types of kidney stones are calcium and oxalate. Each type may require a different eating plan. 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.