What increases the risk of gestational diabetes?

Risk factors include: overweight or obesity before pregnancy; previous gestational diabetes; family history of type 2 diabetes; previous birth of a baby weighing over 4.5kg; certain ethnic backgrounds (South Asian, Black, and East Asian women have higher rates); age over 35; and PCOS. Having one or more risk factors means screening is recommended — typically with a 75g glucose tolerance test at 24–28 weeks of pregnancy.

How is gestational diabetes managed?

First-line management is dietary modification — reducing refined carbohydrates, increasing protein and fibre, and distributing carbohydrates evenly across meals and snacks to minimise glucose spikes. Regular self-monitoring of blood glucose confirms whether dietary changes are achieving targets. Regular gentle exercise (particularly walking after meals) effectively reduces post-meal glucose levels. If dietary management is insufficient, metformin or insulin may be prescribed. Close monitoring of fetal growth continues throughout, as GDM increases the risk of macrosomia and birth complications.

Does gestational diabetes harm the baby?

Well-managed gestational diabetes significantly reduces, though not entirely eliminates, fetal risks. Risks of poorly managed GDM include macrosomia (a large baby), increased risk of shoulder dystocia during delivery, neonatal hypoglycaemia after birth, preterm birth, and stillbirth in severe cases. Babies of mothers with GDM also have a higher lifetime risk of type 2 diabetes and obesity. These risks explain the importance of achieving blood glucose targets throughout pregnancy.

Does gestational diabetes resolve after birth and what are the long-term implications?

For most women, blood glucose returns to normal shortly after delivery — usually within 6 weeks. A fasting glucose or HbA1c test at the 6-week postnatal check confirms resolution. However, GDM carries a 50% lifetime risk of developing type 2 diabetes — making postnatal screening, annual glucose testing, and sustained lifestyle attention important long-term priorities. Breastfeeding is associated with lower maternal insulin resistance. The diagnostic opportunity of GDM is a meaningful motivation for long-term metabolic health investment.

Hormonalmoderate Risk

Gestational diabetes mellitus

Gestational diabetes involves elevated blood glucose during pregnancy, requiring careful management to protect maternal and foetal health. Dietary approaches, therapeutic movement, and blood sugar monitoring are front-li

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Reviewed by Dr. Ian Henderson · Microbiobial Health & Medicine26 March 2026Research-supported

Quick answer

Do any of these feel familiar?

Gestational diabetes is typically discovered through routine screening during pregnancy rather than through obvious symptoms
When symptoms do occur, they may include excessive thirst, frequent urination, fatigue, or blurred vision — though these are common in pregnancy generally and not specific to gestational diabetes
The diagnosis often generates significant anxiety about the health of the baby and concerns about managing blood sugar through diet and, sometimes, medication or insulin
Many women describe the additional burden of monitoring, dietary changes, and medical appointments on an already demanding pregnancy
For most, gestational diabetes resolves after birth, but the experience often motivates long-term lifestyle awareness

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Related Conditions

Hormonal Imbalance

Thyroid Imbalance

Reactive Hypoglycaemia

Type 2 Diabetes

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