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.
Because the most common kidney stone type is composed of calcium oxalate, this would seem to suggest that restricting calcium (in dairy products and supplements) and oxalate (in green leafy vegetables, tea, and chocolate, among other items) is the key to preventing stones.