Sex differences in serum folate concentrations are well known, but no studies have investigated the association between serum folate levels and schizophrenia based on sex. With this study in a Japanese population, we examined the difference in serum folate levels between patients with schizophrenia and non‐psychiatric controls stratified by sex. The relations among serum folate levels, plasma total homocysteine (tHcy), and serum vitamin B6 (pyridoxal) levels were also examined using data from our previous studies.

中文翻译：

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基于性别的血清叶酸水平与精神分裂症的相关性

血清叶酸浓度的性别差异是众所周知的，但没有研究调查过基于性别的血清叶酸水平与精神分裂症之间的关联。通过这项在日本人群中的研究，我们检查了按性别分层的精神分裂症患者和非精神病患者之间血清叶酸水平的差异。还使用我们先前研究的数据检查了血清叶酸水平、血浆总同型半胱氨酸 (tHcy) 和血清维生素 B6（吡哆醛）水平之间的关系。