Abstract: A collection of papers presented at an FDA symposium describes the influences of foods and drugs on thedevelopment and functioning of nervous systems. Neurobehavioral development and maintenance include both neurobiological and neurochemical development of the brain and are affected by nutritional influences. Methods for assessing neurotoxicity and current status of neurotoxicity screening procedures are described. Specific research is detailed briefly. Finally, current issues in neurotoxicity such as food colors, amino acids, vitamins and megavitamins,drug/diet interaction, nutrients as drugs, dietary control of behavior, anticonvulsant drugs, and fetal alcohol syndrome are discussed. (rkm).