As dysregulation of both serotonin and neuropeptide signaling contribute to these diseases and pathologies (Sikander et al. 2009; Zietek and Rath 2016; Ahmed and Ahmed 2019; Kwon et al. 2019; Grondin and Khan 2024), our data support a direct pathological contribution of deltamethrin exposure to the EEC dysfunctions that characterize these intestinal diseases. The gene discussed is NPS; the disease is intestinal disorder.