About 8 million Ethiopians at risk of fluoride-related health problems: report

An estimated 8.5 million Ethiopians, 12 percent of the country's population, are at risk from fluoride, a chemical substance which can become toxic when consumed in high concentration, the private Daily Monitor English- language newspaper reported Saturday.A high concentration of the substance in water used for domestic consumption becomes toxic and spoils the natural color and texture of human teeth, the report said, quoting Berhanu Gizaw, a geological survey expert.Studies indicate the volcanic rocks of East Africa are found to be richer in fluoride than analogous rocks in other parts of the world.......................................