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Fluoride Decline

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Introduction Fluoride is the ionic form of the element fluorine and is the 13th most abundant element in the earth's crust. Chemically, fluoride is negatively charged and combines with positive ions to form stable compounds such as calcium fluoride or sodium fluoride. Such fluorides are released into the environment naturally in the form of both water and air. Generally, when the term fluoride is mentioned, thoughts associated with calcified tissues (i.e., bones and teeth) are provoked. This is likely due to fluoride’s high affinity for calcium, enabling its ability to inhibit or even reverse the initiation and progression of dental caries, otherwise known as tooth decay. Caries are an infectious, multifactorial disease afflicting most persons …show more content…

Today, all U.S. residents are exposed to fluoride to some degree, and widespread use of fluoride has been a major factor in the decline in the national prevalence and severity of dental caries. Although this decline is a major public health achievement, recent speculations have begun to surface after the release of several research studies conducting the safety and efficacy of ingesting this chemical. In fact, according to research published in Lancet Neurology, the highly prevalent chemical was reclassified as a developmental neurotoxin by the Harvard School of Public Health as of March 2014 (Grandjean & Landrigan, 2014). Fluoride is now believed to pose adverse effects during child neurodevelopment, influencing hippocampal regions associated with intelligence. This proclamation, however, wasn’t the first. The United States Environmental Protection Agency (EPA) screens and prioritizes chemicals for developmental neurotoxicity, and in turn assembles a list of chemicals that are toxic to the developing mammalian nervous system. The chemicals are assigned to one of three groups based upon the strength of evidence for neurotoxicity: no evidence, minimal evidence, and substantial evidence. Fluoride has been categorized as a developmental neurotoxin due to substantial evidence as of 2009 …show more content…

The developing human brain is uniquely vulnerable to toxic chemical exposures, and major windows of developmental vulnerability occur in the womb, during infancy and early childhood. Chemical exposure, even at low levels, can cause permanent brain injury during these fragile growth phases, where exposure during adulthood would have little or no adverse effects. Classified amongst other neurotoxic chemicals, fluoride, when administered at high levels, has the potential to cause neurotoxicity in adults and can result in negative impacts on memory and learning according to rodent study reports. Throughout the last several years, advances in scientific research have enabled expansion of what little understanding there is about the substance’s impact on children’s

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