Road conditions in the commonwealth could prove to be challenging today.Preview: A new study suggests a possible connection between fluoride exposure and lower IQs in children. The research published in the journal JAMA Pediatrics is based on dozens of existing studies conducted outside the U.S. Their conclusions are based on fluoride levels that are double what's recommended for drinking water in the U.S. No word on if the additional fluoride from toothpastes was considered during the research.