Risk factors for gestational diabetes

* a previous diagnosis of gestational diabetes or prediabetes, impaired glucose tolerance, or impaired fasting glycaemia
* a family history revealing a first degree relative with type 2 diabetes
* maternal age - a woman's risk factor increases as she gets older (especially for women over 35 years of age)
* ethnic background
* being overweight, obese or severely obese increases the risk by a factor
* a previous pregnancy which resulted in a child with a high birth weight
* previous poor obstetric history