Who is at higher risk of having a baby with Down syndrome?

“Down syndrome babies” refer to infants born with Down syndrome. Down syndrome—also known as trisomy 21—is a congenital condition characterized by intellectual disability, caused by chromosomal abnormalities. So, who is at higher risk of conceiving a baby with Down syndrome? Below are answers to this question.

Who Is at Higher Risk of Conceiving a Baby with Down Syndrome?

1. Advanced Maternal Age

Women aged 35 years and older are considered advanced maternal age. Conceiving or giving birth at this age significantly increases the risk of having a baby with Down syndrome. Moreover, the risk rises progressively with maternal age. Therefore, women of advanced maternal age must undergo comprehensive prenatal screening and diagnostic testing both before conception and throughout pregnancy.

2. Genetic Factors

Down syndrome has a genetic component. If the mother herself or other family members have previously had a child with Down syndrome, the likelihood of conceiving another affected baby increases substantially.

3. Viral Infections

Viral infections during pregnancy may cause chromosomal breakage, thereby markedly increasing the risk of Down syndrome. Pregnant women’s immune systems are relatively compromised, especially during peak disease seasons, making them more susceptible to viral infections. Thus, preventive measures are critically important.

4. Recurrent Miscarriage

Women with a history of recurrent miscarriage face an elevated risk of conceiving a baby with Down syndrome. In such cases, thorough Down syndrome screening should be performed promptly after conception.

5. Exposure to Chemical Substances

Exposure to certain chemical substances during pregnancy can adversely affect fetal development. For instance, pesticides often contain sulfonamide compounds, which may induce chromosomal abnormalities and thereby increase the risk of Down syndrome.

The above outlines key factors associated with increased risk of conceiving a baby with Down syndrome. The optimal childbearing age for women is between 23 and 30 years. Delaying pregnancy until advanced maternal age poses potential health risks both to the mother and the child. We hope this information is helpful. Wishing you a joyful life and good health!