Chicago - The risk of developing diabetes was 2 1/2 times lower among women who ate a low-sugar, high-fiber diet, according to a study published today.

Diets laden with such foods as white bread, cooked potatoes, white rice and cola beverages increased risk of diabetes, which affects 14 million Americans. Healthy foods found to be low in "glycemic load" included whole grain breads, high fiber breakfast cereals, yogurt, beans and peanut butter, Harvard University researchers said.