ABSTRACT
The major sources of human exposure to chemical carcinogens include natural foodborne chemicals, food pyrolysates produced by cooking, food additives, dietary supplements, food contaminants, environmental pollutants, drugs, cigarette smoke, and cosmetics. Among these, epidemiological studies have indicated that diet is the most important factor, accounting for about one-third of human cancer risk (Ames and Gold, 1998). The total amount of natural carcinogens ingested from food every day is much higher than that from environmental sources (Ames and Gold, 1998). The human cancer incidence can be reduced if exposure to foodborne carcinogens can be reduced.
