A retrospective study. Mycotoxins are toxic fungal metabolites naturally found in food and feed as contaminants. In this study, 1818 animal feed and human food samples from three major Kenyan laboratories were categorized as compliant and non-compliant according to Kenya, America and European Union mycotoxin regulatory limits. Quantitative risk assessment of dietary aflatoxin intake in maize, wheat, peanut and dairy products in relation to human hepatocellular carcinoma was also carried out.