In this thesis it has become evident that aflatoxin contamination is wide spread in tropical Kenya. The source of aflatoxins is in the food consumed by these people. It is sad to reflect that if western standards for aflatoxin contamination (11) were applied to the food consumed by our patients, the food would be regarded as unfit for animal consumption. The continued consumption of aflatoxin contaminated food by people in the tropics is a cause for great concern and deserves greater attention than is given to it by the medical profession. Findings reported in this thesis indicate that there is urgent need for further study of the influence of aflatoxins on child health in the tropics.