Will the Risks of birth defects and miscarriage increases with age ?

Birth Defects

The risk of birth defects and miscarriage increase with the increasing age of the mother. This usually happens because of the abnormal division of the egg, which is called non dis-junction. This eventually leads to unequal chromosomes at the end of the division. Generally, a woman is considered to be at high risk for chromosomal abnormalities when she is 35. Around 1 in 1,400 babies born to women in their 20's suffer from the ‘Down syndrome,’ and this increases to 1 in 350 or so in women at 35.

            There is evidence to show that the risk of miscarriage (loss of a pregnancy before 20 weeks gestation) is 12% to 15% for 20-year-old pregnant mothers, which rises to nearly 25% for women at 40 years. Older women are at a greater risk of miscarriages due to the increased incidence of chromosomal abnormalities.

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