In the article titled “Physiologic Conditions Affect Toxicity of Ingested Industrial Fluoride” [1], there was an error in the fourth paragraph of section “3.3. Natural and Industrial Fluoride in Water.” The text reading “Fluoride accumulates from consumption in a 1 ppm fluoride water region, in the absence of other known sources, to 2,500 mg/kg in two years and to 3-4,000 mg/kg lifetime [9]” should be corrected to “Fluoride accumulates from consumption in a 1 ppm fluoride water region, in the absence of other known sources, to 2,500 mg/kg in twenty years and to 3-4,000 mg/kg lifetime [9].”