The U.S. health and human services, 7, the tap water suggested lower the fluoride content standard, because in tap water to higher levels has led to many fluoride teenagers appear fluoride poisoning.
The agency proposal would tap water content of fluoride reduced to 0.7 mg per liter less than, this will be the first time in 50 years to change the fluoride content standard tap water. According to the standards set in 1962, the United States the fluoride content in tap water per litre 0.7 mg to 1.2 mg between.
The United States government has announced the results of a survey shows, because in tap water content of fluoride too high, the United States two 5 teens appeared tooth grain or teeth teeth spot, even some people gums also appears cave.