3 ms·

Seems a little silly to bury it because you don't agree with it. I don't agree with it, but felt it was worth discussing here. I am interested in what other HN

• dalke 13y ago
  The HuffPo article gives a false distortion of what the research study actually says. That's why it should be buried. The article says "Despite the evidence against it, fluoride is still added to 70 percent of U.S. public drinking water supplies." While the study reports a negative correlation with higher fluoride levels, "high" in the underlying studies usually mean above 2mg/L. The US recommended levels are (as the study says) between 0.7 and 1.2 mg/L. A city which adds fluoride to get to 0.7mg/L is in the "low" category for the study, where the IQ levels are higher. As the study did not analyze negative effects of levels lower than about 1.0mg/L, it's impossible to use it to conclude that a level of 0.7mg/L, even if reached by adding fluoride, is bad for IQ. But the HuffPo article makes that conclusion anyway.