【摘要】 现代优生学强调 ,从降低病残儿的出生和提高正常婴儿的智商两个方面优化人口结构。影响优生的主要因素有 :环境因素、孕期感染及药物、饮食调理、遗传病。降低出生畸形儿的百分比 ,是优生的目标和核心所在 ,也是提高整个民族素质的关键更多还原

【Abstract】 Preventing birthy health takes light in superizing the population structural through both reducing the cripples’ birth rate and raising the healthy infants’ intelligence The major factors affected the birth outcome lie in following such as the environmental factors, infection and medicine in pregnancy, diet regulation and heredopathia. Reducing the percentage of terata is the target and keypoint of preventing eugenics. It is also the key to improve the national quarlity.更多还原