Word: cancer
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Dates: during 1970-1979
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...years pass, the system's lymphoid cells, no longer able to proliferate in adequate numbers, lose their power to fight off invaders and sometimes even mistake the body's own tissue for foreign bugs. Thus the aged become increasingly vulnerable to diseases-from cold viruses to cancer...
DIED. Geoffrey T. Hellman, 70, prolific New Yorker staff writer for close to half a century; of cancer; in Manhattan. Hellman's contributions to "Talk of the Town," his acerbic profiles of such legendary characters as Alfred Knopf, and his portraits of the Smithsonian Institution and the American Museum of Natural History ("Bankers, Bones, and Beetles") are masterpieces of New Yorker prose...
Second, most chemicals do not cause cancer in rats, mice, or other species, even when given in very large amounts over a lifetime. Further, with the possible exception of trivalent arsenic, all chemicals that have been shown to cause cancer in man are carcinogenic in rats or mice. Therefore, positive findings in an animal system must not be taken lightly...
Fourth, although studies of human populations to date have not provided evidence linking saccharin with bladder cancer, it must be rembered that heavy intake of this additive in diet drinks has only occurred in relatively recent years. In man, a latent period measured sometimes in years and sometimes in decades is often observed between exposure to a carcinogen and clinical evidence of cancer. In the case of cigarette smoking, its relation to lung cancer was established only after decades of exposure by human populations...
...risk entailed by exposure to saccharin will likely not be known for many years, it must be asked whether this is a risk worth taking. There are, of course, cases where the risks are outweighed by the potential benefits--for example, certain chemotherapeutic drugs are used to treat advanced cancer, even though they carry a risk of inducing cancer. However, artificial sweeteners and many other food additives clearly are not essential for most people...