Editing Toothpaste (section)

===Triclosan===
Reports have suggested triclosan, an active ingredient in many kinds of toothpastes, can combine with [[chlorine]] in tap water to form [[chloroform]].<ref name="pmid15926568">{{cite journal | vauthors = Rule KL, Ebbett VR, Vikesland PJ | title = Formation of chloroform and chlorinated organics by free-chlorine-mediated oxidation of triclosan | journal = Environmental Science & Technology | volume = 39 | issue = 9 | pages = 3176–85 | date = May 2005 | pmid = 15926568 | doi = 10.1021/es048943+ | bibcode = 2005EnST...39.3176R }}</ref> An animal study revealed the chemical might modify hormone regulation, and many other lab researches proved bacteria might be able to develop resistance to triclosan in a way which can help them to resist antibiotics also.<ref>{{cite news|url=http://topnews.net.nz/content/23170-fda-reviewing-triclosan-antibacterial-agent-found-soap|title=FDA Reviewing Triclosan, an Antibacterial Agent Found in Soap| vauthors = Mukherjee K |date=2010-09-04|access-date=2010-10-27}}</ref>