Quick read
Key points
- 1
Gestational diabetes is a type of diabetes that develops during pregnancy in someone who did not have diabetes before. It happens when the body cannot produce enough extra insulin to handle the increased demands of pregnancy, causing blood sugar levels to rise.
- 2
Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
- 3
Blood sugar readings are consistently above the targets your team has given you
01 · Know
What is Gestational Diabetes?
Gestational diabetes is a type of diabetes that develops during pregnancy in someone who did not have diabetes before. It happens when the body cannot produce enough extra insulin to handle the increased demands of pregnancy, causing blood sugar levels to rise.
It's usually picked up through routine screening, often between 24 and 28 weeks of pregnancy. With monitoring and, where needed, treatment, most people with gestational diabetes go on to have healthy pregnancies and healthy babies. Blood sugar levels typically return to normal after birth, though it does raise the future risk of type 2 diabetes.
02 · Understand
Clinical context
Screening is routine, not a cause for alarm
Gestational diabetes is common and is actively screened for precisely so it can be managed early. A diagnosis does not mean something has gone wrong — it means your care team can now put the right support in place.
03 · Act
When to Contact Your Maternity Team
- 1Blood sugar readings are consistently above the targets your team has given you
- 2You feel unusually unwell, very thirsty, or are passing urine much more than usual
- 3You have signs of low blood sugar (shakiness, sweating, confusion) if you are on insulin or other medication
- 4You have any concerns about your baby's movements
04 · Prevent & manage
Practical steps
Follow Your Care Team's Monitoring Plan
Gestational diabetes is managed differently for each person. Always follow the specific blood sugar targets, testing schedule, and dietary advice given by your own maternity or diabetes team rather than general guidance.
- 1Monitor blood sugar as advised.Test at the times your team recommends and keep a record to share at appointments.
- 2Adjust meals with balanced carbohydrates.Spreading carbohydrate intake across smaller, regular meals with protein and fiber can help keep levels steadier — a dietitian can help tailor this.
- 3Stay active where appropriate.Gentle, regular activity such as walking after meals can help the body use insulin more effectively, if your care team has advised it is safe for you.
- 4Attend all scheduled appointments.Extra monitoring appointments and scans are a normal and important part of care with gestational diabetes.
- 5Take medication if prescribed.Some people need tablets or insulin alongside diet and exercise changes — this is common and does not mean the condition is more serious.
Evidence
References
BarnMD Health Intelligence uses authoritative and clinically relevant sources appropriate to the topic. References are shown so readers can inspect the evidence directly.
- HSE: Gestational diabetes ↗
Medical information notice
Health education, not individual medical advice
BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
BarnMD Bottom Line
With the right monitoring and support, gestational diabetes is very manageable, and most pregnancies proceed safely to a healthy delivery.
Stay close to your maternity team — they will tailor targets and monitoring specifically for you and your baby.