叶酸属于人体必需B族维生素,由喋酸和谷氨酸结合而成,主要在小肠内吸收。叶酸在人体内参与氨基酸的相互转换、DNA合成、甲基化反应等许多重要化合物的形成和代谢,在细胞生长、分化、修复等方面扮演重要角色。胚胎发育早期出现两次表观遗传重编程,在此期间孕母叶酸缺乏能引起多 Folic acid is a B vitamins essential for the human body, made of pteroic acid and glutamic acid, mainly absorbed in the small intestine. Folic acid participates in the formation and metabolism of many important compounds such as the conversion of amino acids, DNA synthesis, and methylation in the human body, and plays an important role in cell growth, differentiation and repair. Epigenetic reprogramming occurs twice early in embryonic development, during which pregnant folic acid deficiency can cause more