"The World Health Organization’s cancer agency has deemed the sweetener aspartame — found in diet soda and countless other foods — as a “possible” cause of cancer, while a separate expert group looking at the same evidence said it still considers the sugar substitute safe in limited quantities.
The differing results of the coordinated reviews were released early Friday. One came from the International Agency for Research on Cancer, a special branch of the WHO. The other report was from an expert panel selected by WHO and another U.N. group, the Food and Agriculture Organization.
The Lyon, France-based cancer agency periodically reviews potential cancer hazards, but doesn’t determine how likely they are to cause cancer in their evaluations which range from “possibly” carcinogenic to “probably” to cancer-causing."