Question
I would like to ask what causes Down syndrome?
Answer
Down syndrome is a birth defect disease caused by chromosomal structural abnormalities, with ten percent of cases being due to an extra chromosome from the father. Additionally, teratogenic substances in the environment, such as radiation, may also cause chromosomal abnormalities. If a woman’s abdomen is exposed to radiation before or during pregnancy, the risk of having a child with Down syndrome will increase.