Dioxins and dioxin-like (DL) polychlorinated biphenyls (PCB) are persistent organic pollutants that enter the body mainly by food intake and accumulate in the fat tissue of animals and humans. Foods of animal origin are the primary source of human exposure to dioxins. A small margin exists between current exposure levels in the human population and the levels causing biological effects. Dioxin and PCB monitoring programs for food and feeding stuff in most countries of the world, including many European Countries are currently inadequate. Better control of food production lines and food processing procedures is needed to minimize entry of dioxin to the food chain and will help to avoid dioxin contamination accidents. Therefore, stringent control of concentrations of these contaminants in food and feed is needed.