Risks of Chromosome Issues in Pregnancy
As a woman’s age advances beyond 35, the likelihood of encountering chromosome issues during pregnancy increases slightly. These issues can result in a wide range of conditions, including Down syndrome. Surprisingly, most babies with Down syndrome are actually born to mothers who are younger than 35, indicating that age alone is not the sole determining factor.
However, after reaching the age of 40, the risk of recurrence for Down syndrome becomes higher. This means that if a woman has already had a child with Down syndrome, the probability of her second child being born with the condition increases as she gets older. Fortunately, there are prenatal screening and diagnostic testing options available to detect or rule out genetic birth defects.
Risk of Miscarriage Increases with Age
As women age, their chances of experiencing a miscarriage or stillbirth during pregnancy are higher, according to several studies. The majority of miscarriages occur within the first trimester, and the likelihood of experiencing one increases with age. For instance, approximately 20% of women who are 35 years old and pregnant will unfortunately lose their babies to miscarriage. This rate jumps to 40% for women who are 40 years old, and for those over 45, there is an alarming 80% chance that the pregnancy will end in miscarriage. Researchers suggest that early pregnancy loss is primarily caused by issues with the fetus’s chromosomes.