What are the risks of Downs syndrome?
On average, one in every 1,000 babies born in the UK will have Down’s syndrome. The risk increases with the mother’s age, particularly after 35, as shown in the list below.1 • At 25 years old the risk ratio is 1 in 1400. • At 30 years old the risk ratio is 1 in 800. • At 35 years old the risk ratio is 1 in 380. • At 38 years old the risk ratio is 1 in 190. • At 40 years old the risk ratio is 1 in 110. • At 45 years old the risk ratio is 1 in 30.
