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Why aspartame is listed as a possible carcinogenic
The World Health Organization has classified the artificial sweetener aspartame as possibly carcinogenic to humans. That has led to some concerns and confusion about the risks. Besides diet sodas, aspartame can also be found in a variety of foods, including breakfast cereals, chewing gum and some desserts. Geoff Bennett discussed more with Allison Aubrey of NPR News.
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