计划生育的目的之一是使人口与国家计划经济和社会发展相适应。目前提倡一对夫妻只生一个孩子,因此优生优育,提高人口素质更为社会、家庭所关切。近年来人们对影响优生的因素,包括遗传、环境等方面进行的广泛的研究,其中营养对优生的作用,亦引起大家的注意。 One of the purposes of family planning is to adapt the population to the planned economy and social development of the country. At present advocate a couple only have one child, so prenatal and postnatal care, improve the quality of the population is more social and family concerns. In recent years, people have studied extensively the factors affecting euthanasia, including heredity and environment. Among them, the role of nutrition in eugenics has also drawn people’s attention.