Quote:
Originally Posted by wahoo3
just to investigate this further since everything else was pretty thoroughly debunked.
This site pretty much goes through it, i will paraphrase here.
http://www.oralanswers.com/2011/04/i...iter-of-water/
- A box of toothpaste says to call poison control when you swallow more than is normally used for brushing, not a pea sized amount.
- a pea sized amount contains approx .3mg fluoride
- a liter of water contains approx 1 mg fluoride
- a large stripe of toothpaste contains approx 2.25 mg fluoride.
- a toxic dose in a 150 pound individual is 5-10 grams.
sorry about that just i was just copy pasting things
There have now been 24 studies from China, Iran, India and Mexico that have reported an association between fluoride exposure and reduced IQ. One of these studies (Lin Fa-Fu 1991) indicates that even just moderate levels of fluoride exposure (e.g., 0.9 ppm in the water) can exacerbate the neurological defects of iodine deficiency. In the absence of iodine deficiency, another research team (Xiang 2003a,b) estimated that fluoride may lower IQ at 1.9 ppm, while a recent preliminary study (Ding 2011) found a lowering of IQ in children drinking water at levels ranging from 0.3 to 3 ppm. The authors of this latter study reported that for each increase of 1 ppm fluoride measured in the urine there was a loss of 0.59 IQ points. None of these studies indicates an adequate margin of safety to protect all children drinking artificially fluoridated water from this affect. According to the National Research Council (2006), "the consistency of the results [in fluoride/IQ studies] appears significant enough to warrant additional research on the effects of fluoride on intelligence." Except for an early and small IQ study from New Zealand (Shannon et al., 1986) no fluoridating country has investigated the matter for themselves.
On December 7, 1992, the new Environment Protection Agency Lead and Copper Rule went into effect. It sets the MCL for lead at 0.015 ppm, with a goal of 0.0 ppm. Fluoride falls into the same high toxicity range as lead, and, like lead, fluoride is an accumulative poison. Nevertheless, the MCL currently set by the Environmental Protection Agency (EPA) (management, not their scientists) for fluoride is now 4.0 ppm — 267 times the permissible lead level. It was changed from 2.0 ppm to 4.0 ppm without any new evidence showing it to be safe at that level. This allowed some water districts to use water supplies that would otherwise be considered too toxic, and allowed fluoridators to claim a greater margin of safety. The ADA states that the "optimum fluoride level" is 1.0 ppm. Even that is 67 times the MCL of lead, and fluoride is the more toxic of the two elements. How could that be considered "a small amount" — or safe?
http://www.fluoridedebate.com/index.html