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Study Finds Link Between Water Fluoridation And Diabetes

Published on August 30, 2016 by   ·   No Comments


Derrick Broze

A recent mathematical model study has found a potential link between water fluoridation and type 2 diabetes.

A study from Ohio’s Case Western Reserve University School of Medicine used mathematical modeling to discover a connection between water fluoridation and a rise in diabetes in the United States between 2005 and 2010. The study,Community water fluoridation predicts increase in age-adjusted incidence and prevalence of diabetes in 22 states from 2005 and 2010, was published in theJournal of Water and Health in late May. The study investigated the hypothesis that added water fluoridation has contributed to diabetes incidence and prevalence in the United States.  Kyle Fluegge, author of the paper, concluded that “community water fluoridation is associated with epidemiological outcomes for diabetes.”

Medical Daily reported on the study:

The recent study reveals that fluoridation with sodium fluoride could be a contributing factor to the prevalence of diabetes in the United States, as the chemical is a known preservative of blood glucose. Type 2 diabetes is a growing epidemic in the country with incidence rates quadrupling in the past 32 years. In the study, the sole author of the paper, Kyle Fluegge, used mathematical models to analyze publicly available data on fluoride water levels and diabetes incidence.

‘The models look at the outcomes of [diabetes] incidence and prevalence being predicted by both natural and added fluoride,’ said Fluegge, who performed the study as a post-doctoral fellow in the Department of Epidemiology and Biostatistics at Ohio’s Case Western Reserve University School of Medicine.

When examining diabetes rates across 22 states, the study found a one milligram increase in average county fluoride levels predicted a 0.17 percent increase in age-adjusted diabetes prevalence. The study suggests that adding fluoride additives to water was “significantly associated with increases in diabetes between 2005 and 2010.” Interestingly, the link to diabetes was different depending on the type of fluoride additive used. The substances known by the name fluoride which are added to municipal water supplies are actually a combination of unpurified by-products of phosphate mining, namelyhydrofluorosilicic acid, sodium fluorosilicate, and sodium fluoride.

When sodium fluoride and sodium fluorosilicate were used the increase in diabetes was observed. However,  fluorosilicic acid was associated with decreases in diabetes. Counties that do not add fluoride products, but instead rely only on naturally occurring calcium fluoride also maintained lower diabetes rates. Fluegge observed the positive link when he adjusted fluoride exposure levels to account for an estimated amount of tap water consumption per individual.

“The models present an interesting conclusion that the association of water fluoridation to diabetes outcomes depends on the adjusted per capita consumption of tap water,” Fluegge said. “Only using the concentration [of added fluoride] does not produce a similarly robust, consistent association.” This was the reason why Fluegge adjusted his calculations to incorporate tap water consumption rather than choosing the calculations that relied on “parts per million” measurements of fluoride in the water.

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