What are the risk factors for having Down syndrome?

What are the risk factors for having Down syndrome?

Researchers are unsure why Down syndrome occurs in certain people. Anyone of any race or societal level can be affected.

What is known is that the risk of giving birth to a child with Down syndrome increases as women grow older. Women aged 35 and older are more likely to have their pregnancy affected by the syndrome. But because younger women have higher fertility rates, most babies with Down syndrome are born to women under 35.