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Dr. Dean's research on the fluoride-dental caries relationship, published in 1942, included 7,000 children from 21 cities in Colorado, Illinois, Indiana, and Ohio. The study concluded that the optimal amount of fluoride which minimized the risk of severe fluorosis but had positive benefits for tooth decay was 1 mg per day, per adult.
Referring to a common salt of fluoride, sodium fluoride (NaF), the lethal dose for most adult humans is estimated at 5 to 10 g (which is equivalent to 32 to 64 mg elemental fluoride/kg body weight). [ 2 ] [ 3 ] [ 4 ] Ingestion of fluoride can produce gastrointestinal discomfort at doses at least 15 to 20 times lower (0.2–0.3 mg/kg or 10 to 15 ...
Fluoride's adverse effects depend on total fluoride dosage from all sources. At the commonly recommended dosage, the only clear adverse effect is dental fluorosis , which can alter the appearance of children's teeth during tooth development ; this is mostly mild and is unlikely to represent any real effect on aesthetic appearance or on public ...
A U.S. government report expected to stir debate concluded that fluoride in drinking water at twice the recommended limit is linked with lower IQ in children. The report, based on an analysis of ...
"There was not enough data to determine if 0.7 mg/L of fluoride exposure in drinking water affected children’s IQs," Taylor noted. Fda Bans Red Food Dye Due To Potential Cancer Risk
After fluoride was added in many places to the U.S. water supply, tooth decay declined in both children and adults, and complete tooth loss in older adults became more rare, according to federal ...
In a landmark case, Fluoride Action Network and other health advocacy groups successfully argued that fluoride levels currently promoted as “optimal” by the EPA and other government agencies pose a significant threat to public health, particularly to the cognitive development of children.
Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay, and is handled differently by countries across the world. [2]Water fluoridation is considered very common in the United States, Canada, Ireland, Chile and Australia where over 50% of the population drinks fluoridated water.