WebMD Answers
A major cause of fluorosis the inappropriate use of fluoride-containing dental products such as toothpaste and mouth rinses. Sometimes, children enjoy the taste of fluoridated toothpaste so much that they swallow it instead of spitting it out.
But other things can cause fluorosis. For example, taking a higher-than-prescribed amount of a fluoride supplement during early childhood can cause it. So can taking a fluoride supplement when fluoridated drinking water or fluoride-fortified fruit juices and soft drink already provide the right amount.
Fluoride Levels in Drinking Water
Fluoride occurs naturally in water. Natural fluoride levels above the currently recommended range for drinking water may increase the risk for severe fluorosis. In communities where natural levels exceed 2 parts per million, the CDC recommends that parents give children water from other sources.
Prompted by concerns that children may be getting too much fluoride, the Health and Human Services Department in January 2011 lowered its recommended level of fluoride in drinking water. And the Environmental Protection Agency is reviewing its rules on the upper limit of fluoride levels in drinking water.
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