Why are there more complications if you’re over 35 and pregnant?

Why are there more complications if you’re over 35 and pregnant?

Advanced maternal age is associated with a decrease in egg quality. This means that as your age goes up, your egg quality goes down. "Older" eggs are more likely to cause chromosomal anomalies. A lot of these chromosomal anomalies are what healthcare providers screen for in the first trimester.

Another reason there are more complications after 35 is that your chances of developing most chronic medical conditions increase as you age. Your body simply responds to these conditions differently once you are older. These chronic medical conditions can affect pregnancy and delivery. For example, even a nonpregnant person is more likely to have high blood pressure at 35 than at 25.