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been tested for cancer-causing potential. Some additives that have been associated with cancer in animals have been banned, such as some of the red dyes. Others, such as nitrates and nitrites, are linked to certain cancers yet occur naturally in some foods and are added to others. These substances, once in the body, combine with proteins to form cancer-causing compounds called nitrosamines and nitrosamides. Some foods are inadvertently contaminated with such elements as pesticides, toxins from molds, and other sub

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