Sir, - I think that Dick Ahlstrom's report (Science Today, November 9th) on the positive and negative aspects of adding fluoride to public water supplies misses the point. I don't care if fluoride is good for me, bad for me, or perhaps a bit of both. What I want is the choice whether to take it or not. And at the moment I don't have that choice. - Yours, etc.,
Paul O'Brien, Bertram Court, Dublin 8.