The prevalence rate of carotid artery atherosclerosis in the subjects in each group was found to range from 16.13% (low fluoride concentration) to 29.69% (high fluoride concentration). That’s double the recommended amount of the stuff, so generally that means the groundwater itself has a high concentration, not so much city water.
The possible mechanism was the excess fluoride induced the decreasing level of GPx causing the systemic inflammation and endothelial activation by oxidative stress.
I’m curious to see what the range of research has been on fluoride in drinking water. This is one study, published in August, 2013.
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