can the fluoride increase a boy a bone cancer a probability?

medium wide June 13 a lot of nations in the world and regions in net Hong Kong will join the fluoride that can defend decayed tooth in the drinking water, and feel beneficial not to feel harmful.But the scientist of American Harvard point out, drink the aquatic fluoride can increase the probability that the boy suffers from a bone cancer and have the research organization of the United States more to request an American government to list as fluoride carcinogen.  This research result is what Harvard tooth, medical college lately announces.Scientist, Ba Xin, at it the doctoral dissertation middle finger of four year agos, if the 5-10-year-old boy usually get in touch with fluoride, the probability which suffers from rare bone cancer blood relationship lump at the age of 10-19 will increase.But the girl be uninfluenced, the reason wasn't clear.   "Environment work organization(EWG)" in the United States thinks that Ba Xin's hasing already got the thesis that the expert judge is authentic and that organization hopes the American government to list as fluoride carcinogen.But also there is the United States outside of expert said, though the fluoride probably causes bone cancer, but people have no necessity because of this research but dismay, the fluoride has already used for a long time, isn't what new material.England 《observer report 》also once now the matter covered a British health department, was tell and England lately studies valuation and doesn't show that the fluoride contains any bad place.   According to reveal, Ba Xin Si4's year agoses' completing this is hasn't been open after study.Not a few environmental protection organizations want to look into the claim of research contents to be in succession refuse.Someone guess, may be a research result too sensitive, worry to cause endless litigation.