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Gestational diabetes

Also called: Gestational diabetes, diabetes in pregnancy

High blood sugar that starts during pregnancy. It's found with a routine test at 24 to 28 weeks and is managed with diet, activity, and sometimes insulin.

TestGlucose test at 24 to 28 weeks
Usually endsAfter birth
Later riskType 2 diabetes

Overview

Pregnancy hormones make insulin work less well.

Uncontrolled sugar can make the baby grow large.

Symptoms

Common signs:

  • High blood sugar in pregnancy
  • Gestational diabetes or high sugar in pregnancy

Less common

  • Usually no symptoms

When to get medical care

Call 911Severe headache, vision changes, or swelling (preeclampsia), or reduced baby movement.
Get care todaySugar too high or too low.
See a doctor soonTest due.

Causes

Pregnancy hormones.

Does it spread or run in families?

  • It isn't contagious. You can't catch it from someone else.
  • It can run in families. Tell your doctor if a parent, brother, or sister has it.

Who is more likely to get it

  • Overweight
  • Family history
  • Over 25

Possible complications

Diagnosis

A glucose test finds it.

Tests

Tests, if needed:

  • Glucose tolerance test:

Treatment

Manage sugar.

Self-care

  • Check sugar as directed
  • Follow a meal plan
  • Walk after meals

Medicines

Medicines that may help:

MedicineHelps withGood to know
Insulin
High sugarSafe in pregnancy.
Metformin
Some people

OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.

Prevention

To lower risk:

  • Stay active

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to an endocrinologist (hormone doctor).

Living with it

  • Check your blood sugar as your care team advises.
  • Check your feet every day for cuts or sores.
  • Wear a medical ID and carry a fast sugar, like glucose tabs.
  • Get a yearly eye exam and kidney test.
  • Long-term illness can affect mood. Tell your doctor if you feel down or anxious.

Support groups and helplines

Back to school, work, or sports

  • Most people can keep working or going to school.
  • Ask about changes that help, like extra breaks or a flexible schedule. Workers may be covered by the ADA. Students may get a 504 plan.

Children, pregnancy, and older adults

  • After birth: Get tested 4 to 12 weeks later.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • This condition needs closer checkups during pregnancy. Plan ahead with your doctor.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

For caregivers

  • Go to visits when you can and take notes.
  • Keep a list of medicines, allergies, and doctors in one place.
  • Learn the warning signs that need fast care.
  • Take breaks and ask for help. Caregivers need care too.

Outlook

Well controlled for most.

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Gestational diabetes

Sources

Last updated 2026-11-12.