This document discusses mold and mycotoxins. It describes how mold exposure can cause toxicity and affect the brain, liver, kidneys and other organs. Several types of mold produce toxic mycotoxins like aflatoxins, ochratoxin A, and trichothecenes. Prolonged exposure to indoor molds or mycotoxins in food has been linked to decreased cognitive function in children as well as mental health issues in adults. Testing methods are discussed to evaluate patients for toxic encephalopathy resulting from mold and mycotoxin exposure.