Any woman who has had a miscarriage wants to know the reasons for miscarriage. I wanted to know all the information I could get my hands on to help me understand what causes a miscarriage and what I could do to prevent one in the future.
Many times the reasons are unknown, and a woman will never know. But there are times when it becomes obvious during the course of testing or because of known physical problems the woman is experiencing.
First, let’s look at a couple miscarriage myths – what doesn’t cause a miscarriage.
What does NOT cause miscarriage?
Miscarriage due to low progesterone is a common myth. However, research has shown that falling or low progesterone levels are not what cause the miscarriage but that the pregnancy simply was not going to be viable anyway.
In other words, a progesterone miscarriage is a myth. A luteal phase defect can prevent pregnancy due to low progesterone, but low progesterone will not cause a miscarriage.
Read more about low progesterone levels and infertility here.
Stress and miscarriage are often thought to go together as well. For the most part, this is untrue as well. If a pregnancy is a healthy one, stress will not affect it. The pregnant woman may have more difficulties such as high blood pressure or more mood swings, but stress itself won’t cause a miscarriage.
What causes a miscarriage?
Typical miscarriage reasons are conditions that are hormone related such as diabetes or thyroid, pituitary, or ovarian abnormalities. Age can also play a role in egg quality, which is a common miscarriage cause in women over 35. Other causes can be infection, chromosomal abnormalities, or structural defects.
Smoking and other risky behavior such as illicit drug use can as much as double a woman’s miscarriage risk. So if you’re doing any of these, it’s wise to quit before even trying to get pregnant. Even some prescription or over-the-counter medications can be dangerous during pregnancy, so don’t take anything unless you know it’s completely safe for you and your baby.