BDNF and schizophrenia: Consistent with the results of our study, Nurjono et al. (64) found that there was no significant sex difference in BDNF levels in patients with schizophrenia, which also indicates that the sex differences in BDNF in patients with schizophrenia are not consistent with the results of different scholars and that BDNF levels are affected by many factors in vivo, which requires an increasing number of accurate studies to explore.