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Originally posted by Good Wolf
I've not seen any info on this topic but I've seen and heard references to this conspiracy for a while.
What do you guys know on the subject?
[edit on 9/3/2008 by Good Wolf]
Originally posted by mapsurfer_
I know that here in the US (where I live anyways), they have been fluorinating water since I was a kid (like 40 years ago). I can't say I have noticed any ill effects from it, however I am not verse enough about it to say whether the benefits outweigh the potential risks if any.
Originally posted by logician magician
The deal with fluoride is that it absorbs into your teeth, replacing a portion of the enamel with much stronger element fluoride. The fluoride is much more resistant to acids and so it protects your teeth from cavities better than if you hadn't used it.
Toothpaste and mouthwash are topical fluoride because they are not ingested through the stomach.
This is because most toothpastes have about 1000 parts per million of fluoride vs. toothpaste and is considered a medicine. The FDA requires all over the counter products that contain drugs to include a warning label including instructions to seek medical attention.
City drinking water on the other hand has about 0.7 - 1.2 parts per million of fluoride compared to toothpaste. Natural water levels can vary greatly, with as little as 0.1ppm to pretty high. Seawater has 1.3 ppm of fluoride. Most fluoride that is consumed is passed through the urine within hours, and only trace amounts have been found in bones with normal use.
The toxic levels of fluoride (Hydrofluorosilicic acid) added to water is about 933 mg/kg over a period of 24-32 hours . There are 1 million milligrams of water in a liter. This means an average water supply has about 1 milligram of fluoride in a litre of water. If you drink a gallon a day, you're consuming about 4mg of fluoride. If you weigh 150lbs (68kg) you have to consume 63,444mg (63grams) over a period of about 1.3 days. That's 63,444 litres of water (15,861 gallons), each with 1mg of Hydrofluorosilicic acid. It's impossible. They used to use sodium fluoride in drinking water though, so you would have to drink 5,100 liters of water in 1.3 days to at least get sick - 2.6 liters a minute for 32 hours straight =) Contrast/compare that with the lethal dose of table salt: 204grams or 7.2 oz, or the lethal dose of Caffeine: 10 grams - about 1/3 oz. Vitamin poisoning also exists.
1954 A study is published which links fluorides and the development of cancer in animals. Ref: A Taylor, "Sodium Fluoride in the Drinking Water of Mice",Dental Digest, Vol 60, pp170-172.
1954 C.E.Perkins, I.G.Farben chemist, admits fluoride is to reduce resistance in people to authority.
1956 March 1956 issue of the Journal of the American Dental Association, H.C. Hodge remarks, "skeletal deposition of fluoride is a continuing process in which a considerable portion of the ingested fluoride, perhaps 25 to 50%, is deposited in the skeleton."
1958 Renowned geneticist H.J. Muller reveals that fluorides produce primary damage by injuring the genetic material of the cells they enter. [Muller, Symposium on Emphysema and Chronic Bronchitis: "Do Air Pollutants Act as Mutagens?", Aspen, Colorado, June 13-15, 1958]
1959 Rapaport does a second study on fluoridation and birth defects in Illinois from 1950 to 1956. The study is reported in 1959. The data indicated a highly significant association between the frequency of Down's Syndrome and the fluoride content of the mother's drinking water.
1963 A study is published which links fluorides and development of cancer in animals. Ref: Irwin Herskowitz and Isabel Norton "Increased Incidence of Melanotic Tumors...Following Treatment with Sodium Fluoride", Genetics, Vol 48, pp307-310.
1965 A study is published which links fluorides to cancer in animals. Ref: A. Taylor and N.C.Taylor, "Effect of Fluoride on Tumor Growth", Proceedings of the Society of Experimental Biology and Medicine, Vol 65, pp252-255.
1966 Scientific report reveals that "at concentrations too low to cause visible tissue injury, fluorides induce significant mitotic and meiotic chromosome alterations in tomato plants." [Mohamed, A.H.,et al, "Cytological Effects of Hydrogen Fluoride on Tomato Chromosomes" Canadian Journal of Genetic Cytology, Vol 8, p.575-583,1966]
1966 On April 22, 1966, Dr. F.J. McClure of the National Institute of Dental Research stated that according to their studies, "neither fluoridated toothpaste not topical application with stannous fluoride is found to be of benefit in reducing the incidence of children's cavities".
1968 In the January 1968 issue of the Journal of the Louisiana State Medical Society, Dr. C.C. Bass writes, "I now believe that continued ingestion of fluoride actually increases the activity of the already existing periodontoclasia."
1968 Scientists at the University of Holland, Drs. Mukherjee and Sobels, find that fluorides increase the frequency of genetic damage in sperm cells of lab animals exposed to X-rays. Fluorides inhibited the repair of DNA damaged by radiation.
1970 The U.S. Department of Agriculture Research Service releases Handbook No. 380, which summarizes some of the devastating effects of fluoride pollution: "A literature review was presented to indicate that fluoride was one of the industrial poisons that lowered the immunobiological response of man, pigeons, rabbits and other animals against certain diseases, such as typhoid fever, anthrax, tuberculosis and Staphylococcus aureus (p.52: Ref: Fridlyland, I.G.,1959, The Effect of Industrial Poisons on the Immunological State of the Organism, Gigiena i Sanitariya 24 (8): 55-61 (p.56).
Toothpaste usually contains Sodium Fluoride (or stannous fluoride) at 1000ppm. The lethal dose (that would kill 50% of the people who took it) of this form is between 5000-10,000mg. That's around 75mg/kg in 1.3 days, or 5100mg at the lowest for a 150lb person. If the common toothpaste tube is 6 oz, or 170,000mg and has 0.454% (less than one percent, not 45 percent) sodium fluoride, then it has about 772mg of fluoride. You'd have to swallow more than 5 tubes. If you can make that tube last for 100 brushes, then you are using 1.7 grams of toothpaste per brush, and that brush contains 0.00771mg (7.71micrograms) of fluoride.
Nothing to worry about.