Aflatoxin is a compound that is produced by molds that grow on grains and nuts. Aflatoxin molds are distributed worldwide in soil, plant material and the air. The USDA tightly regulates Aflatoxin levels in peanuts by inspection. The requirement is that Aflatoxin levels be no more than 20 parts per billion (ppb). This is the equivalent of a needle in 267 one-ton haystacks. The peanuts we use are well below this level. The Aflatoxin levels in our peanut butter average well below 10 ppb. Aflatoxin can be carcinogenic in large quantities. However, there is no evidence that peanut butter or peanuts present a health hazard of any significance. I want you to know that I have raised my two girls on our peanut butter and we continue to use it today on a regular basis.