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.
at least 3 quarters of kidney stones are composed of calcium combined with phosphate or oxalic acid tea is a concern because it is rich in oxalic acid to put it in perspective there are other foods rich in oxalic acids such as beet greens chocolate rhubarb spinach and sorrel