The Fluoride Debate







Question 1
Question 2
Question 3
Question 4
Question 5
Question 6
Question 7
Question 8

Question 9
Question 10
Question 11
Question 12

Question 13
Question 14

Question 15
Question 16
Question 17

Question 18
Question 19
Question 20
Question 21
Question 22
Question 23
Question 24
Question 25
Question 26
Question 27
Question 28
Question 29
Question 30
Question 31
Question 32
Question 33


Question 34
Question 35
Question 36
Question 37
Question 38
Question 39
Question 40

Question 41
Question 42
Question 43



Question 31.
Is consumption of optimally fluoridated water harmful to the kidneys?

And does it affect diabetics, or have an affect on the thyroid? (This is a question posed by the opposition.)

ADA's Fluoridation Facts Short Answer
Generally accepted scientific knowledge suggests that the consumption of optimally fluoridated water does not cause or worsen human kidney disease.

ADA's Fluoridation Facts Long Answer
Approximately 50% of the fluoride ingested daily is removed from the body by the kidneys.104, 114, 115 Because the kidneys are constantly exposed to various fluoride concentrations, any health effects caused by fluoride would likely manifest themselves in kidney cells. However, several large community-based studies of people with long-term exposure to drinking water with fluoride concentrations up to 8 ppm have failed to show an increase in kidney disease.95, 198, 199

In a report issued in 1993 by the National Research Council, the Subcommittee on Health Effects of Ingested Fluoride stated that the threshold dose of fluoride in drinking water which causes kidney effects in animals is approximately 50 ppm - more than 12 times the maximum level allowed in drinking water by the Environmental Protection Agency. Therefore, they concluded that "ingestion of fluoride at currently recommended concentrations is not likely to produce kidney toxicity in humans."96

Many people with kidney failure depend on hemodialysis (treatment with an artificial kidney machine) for their existence. During hemodialysis, the patient's blood is exposed to large amounts of water each week (280-560 quarts). Therefore, procedures have been designed to ensure that the water utilized in the process contain a minimum of dissolved substances that could diffuse indiscriminately into the patient's bloodstream.200

Since the composition of water varies in different geographic locations in the United States, the U.S. Public Health Service recommends dialysis units use techniques such as reverse osmosis and deionization to remove excess iron, magnesium, aluminum, calcium, and other minerals, as well as fluoride, from tap water before the water is used for dialysis.200, 201

Additional discussion on this topic is available in Question 17.

Repeat of Question 31.
Is consumption of optimally fluoridated water harmful to the kidneys?

And does it affect diabetics, or have an affect on the thyroid? (This is a question posed by the opposition.)

Opposition's Response

Dr. Heyroth is a proponent for fluoridation yet, when testifying under oath at Congressional Hearings to the question: "Would you give fluoridated water to one with kidney trouble," he answered, "No, the advice would be that he drink fluoride-free spring water." (Dr. Francis Heyroth of Kettering Institute, Cincinnati, Ohio.)

" ... Since kidney damage can be caused by fluoride, there can be a vicious circle by which kidney damage causes more fluoride retention, which in turn causes further kidney damage." (Fredrick B. Exner, M.D., F.A.C.R.)

"Once renal function is severely impaired, the excretion of fluoride in the urine decreases and serum fluoride concentration increases." (K. Kono, et al, Industrial Health, 22:33-40, 1984.)

"Many studies ... have indicated suspicious bio-chemical events, especially in the kidneys, when consuming 1 ppm or more (up to 5 ppm in our study) fluoride ion in drinking water." (Harold Warner, Professor Emeritus, Yerkes Regional Primate Center, Emory University, June 20, 1983.)

" ... bear in mind that all elderly folk eventually have had one degree or another of 'diminished renal (kidney) function' and will accumulate higher tissue levels of fluoride at a time when their tolerance capacities are diminished." (John R. Lee, M.D.)

"It would also seem prudent to monitor the fluoride intake of patients with chronic renal impairment ... particularly those living in areas of high naturally occurring fluoride, children, those with excessive thirst, and those with prolonged disease." ("Position Paper on Fluoride," National Kidney Foundation, page 2, Aug. 16, 1980.)

"Sodium fluoride is a very toxic chemical. It reacts with growing tooth enamel and with bones to produce irreversible damage. It may injure the nervous system, kidneys and other tissues of susceptible individuals. Fluoride is not a necessary trace element for dental health. Uniform dosage of any drug dissolved in the water supply is obviously impossible. Some individuals may drink 10 times as much as others. Thirst has many variables." (Dr. Granville F. Knight, (M.D., F.A.C., F.I.A.A.) Santa Barbara, California.)

"Until recently, I favored fluoridation of the City Water supply in the proportion of 1 ppm, but information provided me by Dr. C. C. Bass, Dean Emeritus of Tulane Medical School for the past 15 years (who has pursued research and study pertaining to teeth) along with some research done by British scientists indicating possible bad effects on the kidneys from fluoridation, has caused me to reverse my opinion on the matter." (Dr. Alton Ochsner, President Ochsner Foundation Hospital and Head of Department of Surgery, Tulane University Medical School, New Orleans, Louisiana.)

"You are absolutely correct in stating that many people have diabetes but don't know it. In the U. S., approximately half of the estimated 12 million people who have the disease don't realize it ... Diabetic care also depends on whether the individual suffers from complications associated with diabetes, such as kidney failure, coronary artery disease, etc. According to the National Institute of Dental Research, fluoride levels in water are set according to normal consumption of water. If an individual is consuming abnormally large quantities of water, he should drink bottled water." (See 31-1: Department of Health and Human Services letter, Jan. 4, 1991). Nearly all diabetics and many athletes drink abnormally large quantities of water-many drink over a gallon a day. Therefore the Public Health Service is saying these people should buy bottled water.

"Because it can be documented that fluorides were given as medication for hyperthyroid patients, it should be considered the obvious cause for hypothyroidism and other thyroid-hormone function-related disorders, including ADHD, arthritis, osteoporosis, etc., especially at intake levels as high as they are." (Thyroid Hormones, pp. 5, by Andreas Schuld, Parents of Fluoride Poisoned Children, PFPC., Vancouver, B.C., Canada.)

"Fluoride decreases the function of the thyroid gland by 30% to 40% and this is one of the most important glands in the body. In several parts of our country, children receive tablets with fluorine, but the fluoridation of drinking water has not been accomplished. We trust it will not happen in view of the special circumstances here regarding our thyroid problem. Research here demonstrates clearly an antagonism between iodine and fluorine. We also showed, in another experiment, that the calcium metabolism is greatly affected by fluorine. Since the bone picks up 30% less calcium in the presence of fluorine, the danger of osteoporosis in a growing organism is very great." (Dr. T. Gordonoff, Professor of Pharmacology, Bern, Switzerland.)

"Long continued ingestion of minute quantities of fluorine causes disease of the thyroid gland." (Dr. Douw G. Steyn, Department of Pharmacology, University of Pretoria, South Africa.)

"We have posted over 100 studies documenting the adverse effects of fluoride on the thyroid gland from the last 70 years or so in the Virtual Library on Fluoride Research at" (Andreas Schuld, Parents of Fluoride Poisoned Children (PFPC), Vancouver, B.C., Canada.)

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