Do cigarette filters cut down on the tar and nicotine that have helped to earn tobacco its unpleasant reputation as a cause of lung cancer, heart disease and assorted other ills? Certainly both tobacco companies and smokers seem to think so. In 1952, only 2% of cigarettes manufactured in the U.S. were filtered; last year, when more cigarettes were sold than ever before, 64.7% had tips purportedly capable of straining out dangerous substances.
As recently as 1962, even so eminent a cancer researcher as Dr. George E.
Moore, of Buffalo's Roswell Park Me morial Institute, agreed that filters could reduce the...
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