What Is Considered Low Blood Sugar during Pregnancy?

Either hyperglycemia ‘too high’ or hypoglycemia ‘too low’ blood sugar during pregnancy is bad both for mother and her baby. If left untreated, both conditions can be harmful and increase the risk of some pregnancy complications.

Both hyperglycemia and hypoglycemia are more likely to occur in pregnant women with gestational diabetes or women who have diabetes (especially type-1 diabetes) before pregnancy. Even both conditions also can occur in pregnant women without diabetes or gestational diabetes (in rare cases).

Gestational diabetes and low blood sugar during pregnancy

As well we know, gestational diabetes is a term used to call diabetes that only develops and occurs during pregnancy. In other words, this kind of diabetes will go away on its own after childbirth (particularly after the placenta is gone).

While some women with gestational diabetes don’t need to take insulin replacement to help their blood glucose control, others do. The decision of whether or not you should take insulin if you develop gestational diabetes during one pregnancy is closely dependent on the results of your blood glucose fluctuation. For this issue, ask your doctor to find more advice!

Placenta tends to produce more pregnancy hormones as the pregnancy progresses. And this can bring a greater effect for the performance of insulin produced by placenta in regulating the amount of glucose in the bloodstream.

In pregnant women with gestational diabetes, the insulin sensitivity or the quantity of insulin produced by placenta tends to decrease as their pregnancy progresses.

To respond this situation, doctor may prescribe some glucose-lowering drugs or insulin replacement to help blood sugar control. The prescribed insulin dosage is usually based on the blood glucose log of each patient.

But when taking insulin, remember that you are also at greater chance of low-blood sugar reaction or medically known as hypoglycemia. Because of this reason, make sure you completely follow and obey all instructions from your doctor on how to properly take your insulin replacement!

low_blood_glucose_during pregnancy_illustrationWhen you are using insulin replacement, make sure you:

  1. Eat your meals at the right time and never skip your breakfast! Skipping your breakfast can affect the regular pattern of your insulin performance in controlling blood sugar.
  2. Eat your foods properly! For instance, chew and eat your food slowly! Don’t forget to always stick with a well-balanced diet!
  3. Keep active but do your exercise moderately and regularly – and avoid strenuous exercise!

What number is considered low blood sugar during pregnancy?

If you have diabetes before pregnancy or develop gestational diabetes, checking your blood glucose at certain times throughout the day is important to keep monitoring the fluctuation of your blood sugar as your pregnancy progresses.

Monitoring your blood glucose is also very useful to make sure that you are on the right line with your appropriate eating and exercise patterns. This is also helpful for the signal of when you should call /see your doctor when your insulin replacement is too over taken.


  • Marie Alice

    I strongly disagree with the “solutions” suggested for low blood sugar. I am pregnant with my second child and have had this condition for years now, and it is common knowledge that eating sugary foods just makes things worse, as it causes the blood sugar levels to go up temporarily, before causing a “crash”. The only way to stabilise blood sugar levels is to concentrate on protein and complex carbs, to avoid eating sweet or starchy foods, or if doing so, to always have them with a source of protein on the side. For example, an apple with a handful of almonds/peanuts, whole wheat toast with peanut butter, baked potato with tuna, etc. Constantly eating sugary foods when suffering from hypoglycemia is not only useless but even harmful, especially while pregnant.

    • doctorone

      #Marie Alice
      Thanks a lot for your advice. The tips mentioned on the article is intended for the emergency procedure to increase the level of blood sugar immediately. Once the blood sugar back to normal, a well-balanced diet is the key for the treatment. We also remember that it’s also important to not over treat the low blood sugar.