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FEAR OF FLUORIDE | PAGE 1, 2
Dr. William Hirzy, a senior EPA scientist and the senior vice president of Local 2050, explains that, in 1977, Congress had instructed NIH's National Toxicology Program to investigate fluoride's effects on lab animals, a task that got assigned to the government's Battelle Laboratories. In the tests, rats and mice were given fluoride in their drinking water. Thirteen years later, the results came back, but not until they had been "adjusted" by a senior official of the United States Public Health Service to suggest that fluoride had no carcinogenic effects.
In response, Marcus urged in a May 1, 1990, memo that the fluoride study be "reviewed by an outside panel not related to the Public Health Service, because the PHS has been in the business of promoting fluoridation for more than fifty years." The memo from Marcus said, "In almost all cases, the Battelle-board certified pathologists' findings were downgraded [by the PHS], with the effect of downgrading the study's conclusion from definitive evidence of carcinogenicity to equivocal evidence."
"One of the most telling parts of that study," says Hirzy, who stresses that he speaks as a union official rather than an EPA spokesman, "is that the rats who got bone cancer had lower levels of fluoride in their bones than people who drink tap water with 4 parts per million (ppm) of fluoride would have. But EPA says that 4 ppm is absolutely no danger to your health; in fact, that's the official standard in this country. That conclusion is such a fraud there are no words to describe it." Hirzy adds that Local 2050 has "filed a grievance asking to be given bottled water here in the EPA headquarters, because the tap water has 1 ppm of fluoride, and all the data we look at says 1 ppm is hazardous."
"There are three or four very strong anti-fluoridation experts in the EPA union, but we feel there's no scientific basis for their charges," responds Tom Reeves, a national fluoridation engineer at the federal Center for Disease Control in Atlanta. Reeves says that two major studies -- one commissioned by the National Academy of Science, one by the Public Health Service -- "examined those charges and found no truth to them." Reeves denies Marcus' accusation that the data gathered by Battelle scientists were tampered with, though he concedes that the congressional investigation concluded otherwise.
At Harvard, Dr. Phyllis Mullenix says she lost her job at the Forsyth Research Institute, which specializes in dental issues, in 1994, after she insisted on publishing research results in the scholarly journal Neurotoxicology and Teratology showing that fluoride adversely affected brain function. By then, Mullenix had spent 12 years at Forsyth's toxicology department, 11 of them as department chairwoman; she was highly regarded for her previous research demonstrating how exposure to lead and radiation lowered children's IQ levels.
"To be honest, I thought studying fluoride would be a waste of time," says Mullenix. "I mean, it's in the water supply, so it's got to be safe, right?" But Mullenix's research found that rats who experienced prenatal exposure to fluoride exhibited higher levels of hyperactivity, while rats with postnatal exposure suffered the reverse: "hypoactivity -- that is, a slowing down of their spontaneous movements -- sitting, standing, smelling, turning the head, etc. ... The reactions of these animals reminded me of the reactions you'd find from high exposures to radiation."
Mullenix says that her superiors ordered her not to publish her results. "Don Hay, the associate director of Forsyth, came and told me, 'If you publish this information, we won't get any more grants from NIDR [the National Institute of Dental Research],' and Forsyth gets about 90 percent of its money from NIDR. I was really upset. I'd never been told not to publish a paper." Within hours of learning that she was indeed publishing her paper, Forsyth fired her, says Mullenix.
"Dr. Mullenix's claim that I wanted to stop her publishing her results, showing a fluoride toxicity in rats, is false," wrote Donald Hay, after consulting with his institute's attorneys. "My concern was that Dr. Mullenix, who had no published record in fluoride research, was reaching conclusions that seemed to differ from a large body of research reported over the last fifty years. These extensive studies have been reviewed and approved by prestigious organizations (American Medical Association and American Dental Association), and indicated that fluoride at ordinary levels was safe. I brought these concerns to her attention." Hay adds, "Dr. Mullenix's claim that she was dismissed after her fluoride paper was accepted is false. We had no knowledge of the acceptance of her paper prior to the time she left [Forsyth]." Hay says Mullenix was dismissed because of problems with the quality of her work.
But if fluoride's health advantages are at least open to question, why is it still being promoted in the United States? "The American Dental Association and the Public Health Service have been committed to fluoridation as a safe and effective way to reduce cavities for 50 years or so, so how could they now come out and admit maybe it isn't safe and effective?" asks the EPA's Hirzy, who adds that besides bureaucratic inertia, there is corporate incentive. Fluoride is a waste product of many heavy industries; it is emitted by aluminum, steel and fertilizer factories, coal-burning power plants and in the production of glass, cement and other items made from clay. These industries would have to pay dearly to dispose of their waste fluoride if they could not sell it to municipalities for adding to tap water. Hirzy cites a memo written on March 30, 1983, by Rebecca Hammer, the deputy assistant administrator in EPA's Office of Drinking Water, which called water fluoridation "an ideal environmental solution to a long-standing problem."
"In other words," says Hirzy, "this [fluoride] that otherwise would be an air and water pollutant is no longer a pollutant as long as it's poured into your reservoir and drinking water. The solution to pollution is dilution, and in this case the dilution is your drinking water. It's a good deal for the fertilizer industry. Instead of paying a substantial amount to cart this stuff away, they get paid $180 a long ton by the water municipalities."
Fluoridation may be an infamous right-wing cause, but the corporate history of fluoride could stir the blood of left-wing conspiracists as well. The fluoride disposal problem arose during World War II, when demand for war materials meant increased production of aluminum, steel and other fluoride-related products. At the end of the war, with massive amounts of fluoride waste needing disposal, the Public Health Service began pushing to add fluoride to the water in Grand Rapids, Mich., and dozens of other U.S. cities. At the time, the Public Health Service was being run by Treasury Secretary Andrew W. Mellon, a founder and major stockholder of the Aluminum Company of America (Alcoa), which had dominated fluoride research since the 1920s. By 1950, as the fluoridation campaign gained steam, the Public Health Service was headed by another top Alcoa official, Oscar R. Ewing, who in turn was aided by Edward L. Bernays, the father of modern public relations and author of the book "Propaganda," who sought to portray fluoride's opponents as wackos.
Whatever its origins, is it possible that America's 50-year embrace of fluoridation has been a terrible mistake? The town of Natick, near Boston, recently reviewed the research and found that there was more than enough fluoride now packaged in our food, drinks and toothpastes; the town decided not to fluoridate its water. Los Angeles, Newark and Jersey City, N.J., and Bedford, Mass., have also removed fluoride from their water.
Critics like Mullenix, Hirzy, Marcus and Carton say we don't yet know enough to say definitively that it's all been a mistake. They want more research by the scientific community, more coverage of the dispute by the media and more awareness of the health risks by the American people. As more parents begin to notice the warnings on toothpaste labels -- and those nasty, irreversible white spots on their kids' teeth -- the issue may once again get the attention and the debate it deserves.
Mark Hertsgaard is the author of four books, including "Earth Odyssey: Around the World in Search of Our Environmental Future," published this month by Broadway Books. Phillip Frazer is the editor of News On Earth; subscriptions are available at firstname.lastname@example.org.
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