First Fork

Gestational diabetes myths, checked

Gestational diabetes does not come from eating too much sugar: pregnancy hormones make insulin work less well, and some bodies cannot make enough extra insulin. You still need carbs, needing insulin is not a failure, and most people with gestational diabetes can have a vaginal birth.

Last reviewed 2026-10-20. Written by the First Fork team from the published guidelines listed below; not reviewed by a clinician. This page is not medical advice.

MythWhat the sources say
You got it from eating too much sugar.Pregnancy hormones interfere with insulin, and some bodies cannot make enough extra insulin.1 The NIH adds that genes and extra weight may also play a role.2
You have to cut out all carbs.The ADA gives a daily minimum of 175 grams of carbohydrate in pregnancy, and says to avoid eating patterns that severely limit carbs, protein or fat, such as keto.3
No more fruit.The ADA's eating pattern for diabetes in pregnancy includes fruits, vegetables, legumes, whole grains, nuts, seeds, fish and other lean protein.3 Your dietitian helps with portions.
Skipping meals keeps your numbers down.ACOG advises regular meals and small snacks, often three meals and two to three snacks a day, to avoid dips and spikes.1
Exercise is not safe now.ACOG advises at least 150 minutes a week, and a 10 to 15 minute walk after each meal can help blood sugar.1
Needing insulin means you failed.Some people need medicine even with diet changes and exercise. Insulin is the recommended medicine and does not cross the placenta.1 See insulin.
If you feel fine, your sugar is fine.Gestational diabetes often has no symptoms.4 The meter tells you, not how you feel.
It means a c-section.Most people with gestational diabetes can have a vaginal birth, although a c-section is more likely than without it. If the baby seems too big for a safe vaginal birth, your ob-gyn talks with you about a planned c-section.1
It means an early induction.If food and activity keep you in range, ACOG advises birth between 39 weeks and 40 weeks plus 6 days.5 See induction and birth.
Your baby will be born with diabetes.What babies of mothers with diabetes are more likely to have is low blood sugar for a short time after birth.6 Later in life, the child is more likely to have obesity or type 2 diabetes.2 See your baby after birth.
You cannot breastfeed.The ADA recommends breastfeeding after gestational diabetes; one of its benefits is a lower risk of type 2 diabetes later.3
It goes away, so that is the end of it.Blood sugar usually goes back to normal after the birth,1 but about half of people with gestational diabetes later get type 2 diabetes.4 See does it go away.

New to all of this? Start with just diagnosed: the first week.

Questions

Did I get gestational diabetes from eating too much sugar?

No. ACOG says pregnancy hormones interfere with insulin, and some bodies cannot make enough extra insulin. The NIH says genes and extra weight may also play a role.

Do I have to stop eating carbs with gestational diabetes?

No. The ADA gives a minimum of 175 grams of carbohydrate a day in pregnancy.

Does gestational diabetes mean a c-section?

No. ACOG says most people with gestational diabetes can have a vaginal birth, although a c-section is more likely.

Can I breastfeed after gestational diabetes?

Yes. The ADA recommends it; one of its benefits is a lower risk of type 2 diabetes later.

Sources

  1. ACOG. Gestational Diabetes (FAQ 177, reviewed April 2026). https://www.acog.org/womens-health/faqs/gestational-diabetes
  2. NIDDK (US National Institutes of Health). Gestational Diabetes. https://www.niddk.nih.gov/health-information/diabetes/overview/what-is-diabetes/gestational
  3. American Diabetes Association. 15. Management of Diabetes in Pregnancy: Standards of Care in Diabetes—2026. Diabetes Care 2026;49(Suppl. 1):S321. https://pmc.ncbi.nlm.nih.gov/articles/PMC12690181/
  4. CDC. Gestational Diabetes. https://www.cdc.gov/diabetes/about/gestational-diabetes.html
  5. ACOG Practice Bulletin No. 190: Gestational Diabetes Mellitus. Obstet Gynecol 2018;131:e49–e64 (reaffirmed 2026). https://pubmed.ncbi.nlm.nih.gov/29370047/
  6. MedlinePlus (US National Library of Medicine). Infant of diabetic mother. https://medlineplus.gov/ency/article/001597.htm

See a mistake, or something unclear? Report a problem