Gestational Diabetes
Current Guidance Update
GDM Diagnosis
Gestational diabetes is diagnosed by a 75g OGTT with values of fasting ≥5.1 mmol/L, 1-hour ≥10.0 mmol/L, or 2-hour ≥8.5 mmol/L.
Blood Glucose Targets
Self-monitoring of blood glucose is recommended with target fasting levels under 5.3 mmol/L and 1-hour post-meal levels under 7.8 mmol/L.
Medical Management
Metformin and glyburide may be appropriate alternatives for some women, although insulin remains the first-line treatment.
Universal Screening
Universal screening with a 75g Oral Glucose Tolerance Test (OGTT) between 24–28 weeks is recommended for all pregnancies worldwide.
Introduction
Gestational Diabetes Overview
Risk Factors
BMI ≥25 kg/m² with progressively increasing risk at higher BMI.
Previous gestational diabetes or previous macrosomic infant.
First-degree family history of type 2 diabetes.
South Asian, Middle Eastern, African or Hispanic ethnicity.
Polycystic Ovary Syndrome (PCOS).
Maternal age of 35 years and above.
Multiple pregnancy.
Combination of multiple metabolic risk factors.
Diagnosis
Gestational diabetes is diagnosed using a 75g Oral Glucose Tolerance Test (OGTT) after an overnight fast. Diagnosis is confirmed when any single value meets or exceeds the WHO 2013 threshold. Women at high risk should be screened at booking and again between 24–28 weeks if the initial test is normal.
Fetal & Neonatal Risks
Maternal Risks
Gestational Diabetes Management
Management
Approximately 70–80% of women achieve adequate glucose control through dietary and lifestyle modification, including consistent carbohydrate distribution, low-GI food choices, regular physical activity, and appropriate pregnancy weight gain.
Self-monitoring of blood glucose remains standard practice, with recommended targets of fasting below 5.3 mmol/L and 1-hour post-meal below 7.8 mmol/L.
When lifestyle measures are insufficient, insulin remains the gold standard treatment, while metformin and glyburide may be considered appropriate alternatives in selected centres.
Postpartum Care
Glucose Testing
Fasting glucose or HbA1c assessment is recommended between 6–13 weeks postpartum.
Annual Screening
Women should continue annual diabetes screening for life following gestational diabetes.
Healthy Lifestyle
Maintain dietary improvements and regular physical activity to reduce the future risk of type 2 diabetes.
Breastfeeding
Breastfeeding is strongly encouraged and is associated with a reduced long-term risk of type 2 diabetes.
Frequently Asked Questions
Will I definitely develop type 2 diabetes after GDM?
Not definitely, but risk is significantly elevated — approximately 50% within 10 years without intervention. Lifestyle modification substantially reduces this risk.
Is GDM my fault?
No. GDM results from genetic predisposition, ethnicity, pregnancy hormones, and metabolic factors combined — not individual behaviour.
Can I eat normally if I have GDM?
Dietary modification rather than strict restriction allows most women to achieve good glucose control while maintaining adequate nutrition.
Conclusion
Gestational diabetes is common, clinically significant, and highly manageable with the right support. In Dubai's high-risk population, structured screening and individualised management are essential to optimising outcomes.
Sources & References
This article draws on guidance current at the time of writing from the following bodies and publications:
- WHO 2013 Criteria (reaffirmed 2024)
- NICE NG3 (updated 2023)
- ACOG Practice Bulletin #190 (2024)
- FIGO (2023 GDM Initiative)
General reference bodies for women's health guidance:
RCOG
rcog.org.ukACOG
acog.orgFIGO
figo.orgWHO
who.intNICE
nice.org.uk⚠ IMPORTANT DISCLAIMER
This article is provided for general knowledge and reference purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. No medication, treatment, or change to your healthcare should be undertaken based on this content without first consulting a qualified doctor. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition.
Consult Dr. Ruby Rashmi
Specialist Obstetrician & Gynecologist, Dubai
