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What Causes High Blood Sugar in Pregnancy?

Pregnant women who develop gestational diabetes may be able to manage their symptoms through a well-balanced diet and exercise.
The risks of having high blood pressure during pregnancy are numerous.
Gestational diabetes can develop in older pregnant women, along with other medical conditions.
When a pregnant woman is diagnosed with gestational diabetes it does not mean that she has diabetes.
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  • Written By: Lynda Lampert
  • Edited By: A. Joseph
  • Last Modified Date: 15 September 2014
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High blood sugar in pregnancy is caused by hormonal changes that a woman's body undergoes while she is pregnant. The placenta, which helps nourish the baby in the mother's uterus, produces hormones that cause the mother's body cells to reject insulin. This is known as insulin resistance, and it increases as the placenta gets bigger throughout the pregnancy. Usually, the mother's pancreas will produce three times the normal amount of insulin to compensate. If it is unable to keep up, it leads to a condition known as gestational diabetes.

When a woman is diagnosed with gestational diabetes, and it does not mean that she has diabetes. The hormonal changes from pregnancy itself cause the high blood sugar, and a mother could have normal blood sugar when not pregnant. Those at highest risk include women who are overweight, have a family history of diabetes, or are of a certain heritage, such as Hispanic, black, American Indian, or Asian. Also at a high risk are women who have sugar in the urine or moderately high blood sugar levels generally, have given birth to a baby that weighed more than 9 pounds (4.1 kg), have had a stillbirth, or have too much amniotic fluid. Some women, however, develop high blood sugar in pregnancy without any known risk factors at all.

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The risks of having high blood sugar during pregnancy are numerous. Blood sugar that is out of control early in pregnancy can lead to birth defects of the brain and heart or possible miscarriage. Later in the pregnancy, it can lead to the baby becoming too large. This can lead to complications when delivering, such as shoulder trauma or the need for a Caesarean section instead of vaginal birth. A baby's blood sugar can also drop very low after birth if it is used to a high blood sugar environment while in the mother's womb.

Those at high risk for this problem should be tested as soon as possible for gestational diabetes, but most other women can be screened during the 24th week. The test will involve drinking a sweetened liquid and having the blood sugar checked at regular intervals. If gestational diabetes is found, a woman will have to monitor her blood sugar four times a day and take insulin to regulate her blood sugar levels. Diet, exercise, and following up with a medical professional will also be a large part of her safe pregnancy as a gestational diabetic.

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bluedolphin
Post 3

@burcidi-- I remain a diabetic even after giving birth but my doctor thinks that I was already a diabetic before pregnancy but didn't know. I was (and still am) overweight and I also have family members with diabetes.

candyquilt
Post 2

@burcidi-- I had gestational diabetes and my blood sugar went back to normal a few months after giving birth. The doctor just said that I need to be careful in the future as I might be a candidate for pre-diabetes and type two diabetes.

You're actually lucky because you just need tablet medication. The doctor will allow you to carry full term. I had very high blood glucose levels during my pregnancy. I was put on tablet medication first but it wasn't enough so I had to switch to insulin. I was required to give birth at nine months and not a day later.

burcidi
Post 1

Did anyone here have gestational diabetes? Did your blood sugar levels go back to normal after giving birth?

I've just been diagnosed with it and I'm following my diet and taking an oral anti-diabetic medication. My blood glucose levels have been normal since taking the medication. But since I have diabetes in my family, I'm not sure if the diabetes will disappear after I give birth. Does gestational diabetes go away for most people?

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