Meat and poultry products that are contaminated with foreign materials are adulterated under the Federal Meat Inspection Act (FMIA) and Poultry Products Inspection Act (PPIA) regardless of the physical characteristics of the foreign material (e.g., shape, size, hardness, etc.). Contamination can occur at any point along the food production chain—during production, processing, distribution, or preparation. A meat or poultry product is adulterated, among other circumstances, if it bears or contains any poisonous or deleterious substance that may render it injurious to health; it is unhealthful, unwholesome, or otherwise unfit for human consumption; or it was prepared, packaged, or held under insanitary conditions whereby it may have been rendered injurious to health (see 21 U.S.C. 453(g) and 21 U.S.C. 601(m)).