INS and schizophrenia: For all participants with schizophrenia, ASEX score (B = 0.053, p < 0.001), age (B = −0.006, p = 0.004), female sex (B = 0.119, p = 0.015), and insulin level (B = 0.014, p = 0.044) were associated with hyperprolactinemia (Table 2).