§ Mrs. Joyce Butlerasked the Minister of Health if he will list the studies which have been made in the United Kingdom of the effect of one part per million of sodium fluoride in the water supply on the health of various groups, stating in each case the age groups concerned, the diseases considered, and the length of time covered by the study.
§ Mr. K. RobinsonFor over five years in three areas where one part per million of fluoride was added to the water supply all general practitioners were asked to report any case of suspected harm to their patients of any age. In addition, special inquiries were made into the incidence of dental caries and dental mottling in children aged three to seven years, of anæmia of pregnancy, and of peptic ulcer at any age. For full particulars I would 127W refer my hon. Friend to the Report on the Conduct of the Fluoridation Studies in the United Kingdom.