An outline of the congress and some of my impression of Mexico are presented. I attended the XIV International Congress of Toxicology held on 2 through 6 October, 2016, to present some results of our recent research, entitled “Opening ATP-sensitive K+ (KATP) channels increases MPP+-induced hydroxyl radical generation via estrogen action in rat striatum” (by Toshio Oata and Michiko Nakashima)