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Fluoridated Water and Cancer

Fluoride reduces adhesion forces in bacteria.
Reduced adhesion forces are involved in cancer metastasis.
Fluoridated drinking water is positively correlated with cancer rates in the US.

Fluoride and Adhesion Forces

Researchers in Experimental Physics at Saarland University in Germany recently discovered how fluoride disrupts cavity-causing bacteria. Fluoride reduces the adhesion forces of bacteria, so they are less able to adhere to teeth, where they produce the acid that causes cavities.

Because fluoride reduces the ability of decay-causing bacteria to stick to teeth, it is easier to wash away these bacteria by saliva, brushing, and other activity. [Loskill et al. 2013] The researchers said, "Fluoride appears to weaken bacterial adhesion forces in general."

Adhesion Forces and Cancer

In the majority of the human cancers, it has been clearly demonstrated that alterations in adhesion forces are implicated in the invasion and metastasis process. Metastasis, the late stage of cancer spread, involves the migration of malignant neoplasms from one anatomical site to another. This process is likely to be most affected by de-arrangement or alterations in adhesion receptor levels or function. [Golias et al. 2005]

"Tumor cells that exhibit low cell-cell adhesion forces would represent a highly metastatic phenotype since they detach more easily." [Studies of adhesion forces between cancer cells]

The #2 leading cause of death in the US:
Malignant neoplasms (cancer)

Fluoride and Cancer Metastasis

"Cancers of the oral cavity and pharynx, colon and rectum...
were positively associated with 'optimally' fluoridated drinking water

– Takahashi et al. (2001) Regression analysis of cancer
incidence rates and water fluoride in the US (1978-1992)

The CDC continues to ignore this study, even though its own data* show a positive association between cancer rates and fluoridated water:

Cancers of the oral cavity and pharynx average 6.4% higher,
and cancers of the colon and rectum average 5.6% higher

in the 20 states more than 80% fluoridated (average 93%)
than in the 30 states <80% fluoridated (average 58%).

*Oral Cavity and Pharynx. Crude Invasive Cancer Incidence Rates and 95% Confidence Intervals by U.S. Census Region and Division, State, and Race and Ethnicity, United States. 2013. (Table

*Colon and Rectum. Crude Invasive Cancer Incidence Rates and 95% Confidence Intervals by U.S. Census Region and Division, State, and Race and Ethnicity, United States. 2013. (Table

In the 10 most fluoridated states, the death rate for cancer is
7.6% higher than in the 10 least fluoridated states.
See Fluoride and Life Decay.

In 2010, Saarland University researchers showed that the long-hypothesized "protective layer" that fluoride supposedly forms on teeth is in fact only six nanometers thick. (10,000 layers would span the width of a human hair.) Such a minuscule layer is quickly worn away by ordinary chewing, so would not shield teeth from decay. – Does fluoride really fight cavities by 'the skin of the teeth?' (American Chemical Society)

This confirms what the CDC already knew: "The prevalence of dental caries in a population is not inversely related to the concentration of fluoride in enamel, and a higher concentration of enamel fluoride is not necessarily more efficacious in preventing dental caries."