The spirit in which this book is written is set in Rorty's introduction: "It [the fluoridation program] is the first time that public-health officials have deliberately falsified, distorted, and suppressed scientific information tending to impugn the safety of a public-health measure."
The animosity of the authors toward the United States Public Health Service is further evidenced by Exner's remark: "There is, in fact, every evidence that the primary purpose of fluoridation is not directed against dental decay; and that the real desire is for a legal precedent for compulsory medication in noncommunicable disease." These are harsh statements, for which I find no satisfying evidence:
Two aspects of the book will be discussed here: 1. Does water fluoridated at about one part per million reduce dental caries? 2. Will such water produce harmful effects on the human body?
As to reduction caries, Exner writes that the DMF ratio (the number of