Tooth cavities have increased in Calgary since the city stopped adding fluorides to its water in 2011 according to a study published in the journal Community Dentistry and Oral Epidemiology. Researchers from the University of Calgary compared the number of cavities in children for Edmonton, where water is still fluoridated, with Calgary where it is not.
The lead author of the study is candid: “This study points to the conclusion that tooth decay has worsened following removal of fluoride from drinking water, especially in primary teeth, and it will be important to continue monitoring these trends.”
The pro-cavity groups –let’s call the anti-fluoridation groups what they are – ran a scare campaign against the fluoridation of Kamloops’ water supply in 2001 and won.
Like good scare campaigns, theirs contained an element of truth. Yes, fluorides are produced by chemical companies but to claim that they were dumping their toxic byproducts into our water was misleading. Yes, too much fluoride can lead to fluorosis but that would take much more than what was added to Kamloops’ water.
Let’s get the facts straight; ones that I challenge the pro-cavity groups to deny. All water is naturally fluoridated. As I said in my column of 2001 “All river water, well water, filtered water, reverse osmosis water, bottled water, and tap water is fluoridated. The only water that isn’t is rain water collected in sterile containers, and distilled water.”
No wonder: Fluorine is the 13th most abundant terrestrial element. The concentration of natural fluorides depends on the acidity of the water and length of time in contact with rocks and soil. River water is less fluoridated than well water. Kamloops’ water is naturally fluoridated with more than one-half the concentration necessary to prevent tooth decay.
Fluoridation is nature’s way of reducing cavities. The benefits of fluoridation weren’t discovered by some mad scientist who experimented on his tortured patients by pouring fluorine down their throats. The benefits were discovered incidentally in the early 1900s by a Colorado Springs dentist, Frederick S. McKay, who noticed that many of his patients had brown stains on their teeth and reduced cavities. The brown stains were caused by too much fluoride (fluorosis). When the fluorides were reduced, the stains went away and the benefits remained.
If our water is already fluoridated, you might reasonably ask, why add more? At about 0.5 parts per million, Kamloops’ water doesn’t have quite enough. When I wrote my column in 2001, the recommended amount was 1 part per million but according the Calgary study, 0.7 parts will do.
Some countries act responsibly. I just returned from Mexico where I noticed that fluorine are added to salt, much in the way that iodine (another halogen) is added to ours to prevent of intellectual and developmental disabilities, and thyroid gland problems. Children in Mexico are protected from the pro-cavity groups.
I take the issue personally. While researching Kamloops before moving here, one of the appealing features was the city’s fluoridated water supply. My son grew up with flawless teeth due to fluoridation, dental hygiene, and heredity. I don’t know of any studies in Kamloops but my dentist tells me that he sees more cavities now, especially in low income families.
The dental health of Kamloops’ most vulnerable have been put at risk because of a misguided lobby.