Does saccharin cause bladder cancer in human beings? This question is at the center of a debate that has raged since March 1977, when the Food and Drug Administration announced—largely on the basis of tests on rats—that it was planning to ban the artificial sweetener. Deluged with complaints from food manufacturers and consumers, Congress imposed an 18-month delay on the ban. Now come two reports that question the wisdom of any prohibition of saccharin.
In a study at Johns Hopkins University, Epidemiologists Irving I. Kessler and J. Page Clark questioned 519 patients with...
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