Tooth decay and the common cold are among the most prevalent diseases of civilized man. They are also alike in other respects: each can be caused by a variety of microbes, each has defied medical science's search for a cure, and each disease finds some people naturally immune.
Bacteriologist Gordon E. Green of Detroit's Henry Ford Hospital told the American Dental Association last week that about 1% of the adult population, regardless of racial origin, seems to be completely immune to tooth decay. Neither the amount of fluoridated water consumed during childhood nor the number of germs in the mouths seems to...
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