Consanguineous marriage is an act of direct or collateral marriage within three generations. Our country's laws explicitly prohibit consanguineous marriage. Marriage between close relatives can affect the health of the next generation, and the offspring are prone to intellectual disability, leukemia, and genetic diseases.
1、 How does consanguineous marriage count
Direct blood relatives, in simple terms, are those who gave birth to and raised you. For example, father, mother, daughter, son, as well as grandparents, grandparents, etc.
The specific algorithm for collateral blood relatives within three generations: starting from you, you are the first generation, your father is the second generation, your grandfather is the third generation, and your great grandfather is the fourth generation.
If the common ancestor of both men and women is within three generations, marriage is prohibited. If it is outside of three generations, the law allows it, for example, if two people's great grandfathers or great grandfathers are common, then marriage is legally allowed.
2、 The harm of consanguineous marriage
1. Leukemia
The probability of offspring from consanguineous marriages developing albinism is higher than that of offspring from non consanguineous marriages.
2. Intellectual disability
The intellectual problems of children born to consanguineous marriage couples can also be affected. Generally, consanguineous marriage can easily lead to intellectual disability in children, and there are more cases of congenital abnormalities in children born to non consanguineous marriage couples.
3. Congenital malformation
Marriage between close relatives can significantly increase the rate of congenital malformations in children. Even the mortality rate of offspring born to couples who marry close relatives is much higher than that of children born to non close relatives.
4. Hereditary genetic diseases
The likelihood of offspring from consanguineous marriages developing genetic diseases is also higher than that of offspring from non consanguineous marriages.