每对夫妻都希望生个健康活泼的好宝宝,这是个优生问题,影响优生的因素很多,除遗传、环境因素外,维生素也是个重要因素。本文仅阐述维生素这一因素。不少实验证明,妊娠期孕妇和胎儿体内都要保持适当水平的维生素,否则将会影响胎儿的生长发育。在很早就有动物实验证明了孕期维生素的重要性,比如孕鼠缺少叶酸会引起鼠胎神经、心血管或尿路异常,缺乏维生素A会引起鼠胎无眼、脑积水、心血管及其他异常。 Every couple wants to have a healthy and lively baby. This is a problem of eugenics. There are many factors that affect eugenics. In addition to genetic and environmental factors, vitamins are also an important factor. This article only describes the vitamin. Many experiments show that pregnant women and fetuses during pregnancy have to maintain the appropriate level of vitamins, otherwise it will affect the fetal growth and development. Early animal experiments proved the importance of vitamins during pregnancy, such as lack of folic acid in pregnant rats can cause fetal nerve, cardiovascular or urinary tract abnormalities, lack of vitamin A can cause mouse fetal eye, hydrocephalus, cardiovascular and Other abnormalities.