These days it seems common for women to get pregnant when they are either in or close to middle age (age 40). Although there are a variety of reasons for this, the truth is that there are medical risks for pregnant women who are older than 35. This article outlines some of those risks.
Not every woman over the age of 35 will have to deal with medicals risks, but they do exist, so it is best to be prepared. Fertility starts to decrease in the 30s, so just getting pregnant may be difficult. But, once pregnant, the chances for a miscarriage or birth defects goes up greatly the older a woman gets.
Miscarriage can, and does, happen at any age. However, research has shown that age plays a major role in the chances of miscarrying. According to the March of Dimes, the chance of miscarrying at any given age range is as follows (the percentages are approximate):
- 10% for women in their 20s
- 20% for women 35-39
- 35% for women 40-44
- 50% for women 45 and older
Just as with miscarriage, the risk of birth defects also goes up with a woman's age. Downs Syndrome, which is a chromosomal birth defect, is the most common (and well-known) birth defect for children born to women over age 35. Below are the chances for birth defects, as documented by the March of Dimes, based on a woman's age:
- 1 in 1,250 for women age 25
- 1 in 1,000 for women age 30
- 1 in 400 for women age 35
- 1 in 100 for women age 40
- 1 in 30 for women ate 45
- 1 in 10 for women age 49
As you can see from the above chart, the older a woman is when pregnant, the great the chance of her baby having a birth defect. Pregnant women have the option of doing genetic testing, which can determine if unborn babies have birth defects. There are risks associated with these tests, though. Although uncommon, there have been false positives, which can cause parents to take actions they wouldn't have otherwise taken. Or, also uncommon, miscarriage can be caused.
Multiple births is another risk of being pregnant over the age of 35. Older women are known to release more than one egg, which is the reason for the increase in multiple births. Being pregnant with multiple babies will likely cause a woman to be on bed-rest, to help the babies grow to full-term (or as close to full-term as possible).
It is important for any woman over age 35 who wants to get pregnant to be aware of the risks involved, both to their babies and to them. Whether already pregnant or trying to get pregnant, it is important that women who are 35 and older discuss all risks and options with their doctors, so they can be as informed as possible during this exciting time.
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