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GENEVA (AP) _ Experts at a U.N. sponsored meeting said Thursday that there was a ``major concern'' that high levels of a substance called acrylamide in high carbohydrate food such as french fries and potato chips may cause cancer in consumers.

The experts at the three-day meeting sponsored by the World Health Organization and Food and Agriculture Organization said further study was needed to determine the extent of the risk _ and how to reduce it.

In the meantime they stopped short of issuing guidelines on whether to avoid certain types of food and reiterated standard nutritional guidelines that people should eat a balanced and varied diet with lots of fruits and vegetables and limit the intake of fried and fatty foods.