Definition
Aflatoxins are
toxins produced by a mold that grows in nuts, seeds, and legumes.
Function
Although aflatoxins are known to cause cancer in animals, the Federal Drug Administration (FDA) allows them at low levels because they are considered "unavoidable contaminants" of these foods.
The FDA believes the occasional consumption of small amounts of aflatoxin pose little risk over a lifetime. It is not practical to attempt to remove aflatoxin from food products in order to make them safer.