The late Dr John Colquhoun was the Principal Dental Officer of Auckland and head of the Fluoridation Promotion Group when he changed his mind about fluoridation Why I Changed My Mind About Fluoridation dentistfluoridationfluoridejohn colquhounnz dentistnz dentist who changed his mind Related postsAn Inconvenient ToothNovember 26, 2016Fluoridation and the EnvironmentNovember 26, 2016Professional Perspectives on FluoridationNovember 26, 2016The Fluoride Deception (28 mins)November 26, 2016Fluoride – Arkansas’ Protected PoisonOctober 7, 2015