Risks Of Being Pregnant At 40 Years Old. Carrying more than 1 baby can make. One columbia university study found that 2.9% of women older than 40 have babies with birth defects, compared with 1.7% of all women younger than 35.
Most significantly, your fertility drops sharply after the age of 35. Many women over forty have an increased chance of having a baby with a. If you get pregnant at age 25, your risk of having a baby with down syndrome, for example, is about 1 in 1,250, according to the national institutes of health.