Perfluoroenanthic acid (Perfluoroheptanoic acid) is a perfluoroalkyl substance (PFAS) that negatively impacts spermatogenic development and testicular m6A RNA methylation in offspring exposed during gestation, thus impeding spermatogenesis and inducing reproductive toxicity. Additionally, in primary cortical neuron cultures, Perfluoroenanthic acid alters dendritic spine morphology and synaptogenesis, enhances neural activity and synaptic transmission, and increases the expression of excitatory synapse-associated proteins Synaptophysin and PSD95.