Researchers found that women who have a history of diabetes during pregnancy can still reduce their risk of developing it by living a healthy lifestyle that includes eating well, quitting smoking, exercising frequently, and not being overweight. The results show that women who adhered to five key lifestyle factors - healthy weight, high-quality diet, regular physical activity, moderate alcohol consumption, and not smoking - had a 90 per cent lower risk of the disorder compared with women who did not adhere to any, even among those who were overweight or obese, or were at greater genetic risk of type 2 diabetes. It's widely known that a healthy lifestyle is associated with a lower risk of developing Type 2 diabetes in generally healthy middle-aged populations. But less is known about whether this also applies to high-risk women with a history of diabetes in pregnancy (gestational diabetes), and if obesity status or genetic risk of type 2 diabetes influence this association. To fill in these research gaps, researchers evaluated the associations of adherence to optimal levels of five modifiable risk factors - healthy body mass index, high-quality diet, regular physical activity, moderate alcohol consumption, and not smoking, with the risk of developing type 2 diabetes among these women at high risk. The researchers also assessed whether these associations changed according to obesity status or underlying genetic susceptibility for type 2 diabetes.