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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 ...
An ADA spokesperson, Dr. Scott Tomar, said that if more robust studies prove a link between fluoride and brain development, public health leaders should take a closer look at the mineral's effects ...
In August, a federal report found that high levels of fluoride in drinking water (i.e., at twice the currently recommended limit) is linked to lower IQ in children.
Ingested fluoride forms hydrofluoric acid in the stomach. In this form, fluoride crosses cell membranes and then binds with calcium and interferes with various enzymes. Fluoride is excreted through urine. Fluoride exposure limits are based on urine testing, which is used to determine the human body's capacity for ridding itself of fluoride. [69 ...
Fluorine, in the form of fluoride, is considered to be a micronutrient for human health, necessary to prevent dental cavities, and to promote healthy bone growth. [28] The tea plant ( Camellia sinensis L.) is a known accumulator of fluorine compounds, released upon forming infusions such as the common beverage.
[22] [56] Studies in the U.S. in the 1950s and 1960s showed that water fluoridation reduced childhood cavities by fifty to sixty percent, while studies in 1989 and 1990 showed lower reductions (40% and 18% respectively), likely due to increasing use of fluoride from other sources, notably toothpaste, and the "halo effect" of food and drink that ...
If you could somehow make it through all of that, then a blistering hot core made of iron and nickel awaits you at the planet’s center—along with a surprise, as scientists have yet to discover ...
Sodium fluoride (NaF) is an inorganic compound with the formula Na F.It is a colorless or white solid that is readily soluble in water. It is used in trace amounts in the fluoridation of drinking water to prevent tooth decay, and in toothpastes and topical pharmaceuticals for the same purpose.