Strong family history of diabetes

History of gestational diabetes

Polycystic ovary syndrome

Impaired glucose metabolism: fasting glucose level between 110 and 125 mg per dL (6.1 and 7.1 mmol per L) or impaired glucose tolerance, with a two-hour post–75-g glucose load level between 140 and 199 mg per dL (7.8 and 11.1 mmol per L)3

Obesity: body mass index of 30 kg per m2 or more

Increased waist-to-hip ratio: 1.0 in men and 0.8 in women