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.
All tea contains oxalates that may cause kidney stones. The most common type of kidney stone is the calcium oxalate stone formed in the kidney when soluble oxalates combine with soluble calcium compounds to form the highly-insoluble calcium oxalate.