Advances in Neurotoxicology, Volume 11 presents interesting chapters written by an international board of authors. Chapters in this new release include Gut microbiota as a mediator on the neurotoxicity of mercury, Relationships between lead-induced learning and memory impairments and gut microbiota disturbance in mice, Utility of zebrafish-based models in understanding molecular mechanisms of neurotoxicity mediated by the gut-brain axis, Alterations of gut microbiota linking environmental exposures to neurotoxicity, Iron Toxicity, Ferroptosis and Microbiota in Parkinson’s Disease: Implications for Novel Targets, and Modulation of gut microbiota with probiotics as a strategy to counteract endogenous and exogenous neurotoxicity.