The Canadian Cancer Society and Health Canada are reviewing the World Health Organization's classification of "aspartame" as a probable carcinogen.

On Thursday evening, the World Health Organization released results from two expert teams stating, "There is limited evidence that artificial sweeteners may be associated with liver cancer," but they also said that aspartame is still considered safe for consumption within the recommended daily limit.

Health Canada and the World Health Organization recommend the same daily limit of 40 milligrams of aspartame per kilogram of body weight.

Dr. David Ma, a professor of nutritional sciences at the University of Guelph, says that a person weighing 70 kilograms should drink about 15 cans of diet soda a day to exceed this daily limit.

The World Health Organization recommends further research on aspartame to determine whether it causes cancer or not.