Aflatoxins are poisonous carcinogens and mutagens that are produced by certain kinds of fungi (molds), which are found naturally all over the world in soil, decaying vegetation, hay, and grains. They are regularly found in improperly stored staple commodities such as cassava, chili peppers, cottonseed, millet, peanuts, rice, sesame seeds, sorghum, sunflower seeds, tree nuts, wheat, and various spices. When contaminated food is processed, aflatoxins enter the general food supply, where they have been found both in pet and human foods, as well as food stock for agricultural animals. Animals that are fed contaminated food can pass aflatoxin transformation products into eggs, milk products and meat. Children are particularly affected by aflatoxin exposure, which is associated with stunted growth, delayed development, liver damage, and liver cancer.