Which of the following is a criterion for diabetes screening in individuals over 40 years of age?

A previous history of gestational diabetes mellitus is indeed a recognized criterion for diabetes screening, particularly in women. Individuals over 40 years of age are at an increased risk of developing type 2 diabetes, and having had gestational diabetes during a previous pregnancy significantly raises that risk. This history not only indicates a predisposition to insulin resistance but also highlights the need for proactive screening strategies to detect any potential development of diabetes earlier.

While the other options may be related to general health and risk factors for various diseases, they do not specifically align with screening criteria for diabetes. A history of smoking and a family history of hypertension may contribute to overall health risks, yet they are not direct indicators for diabetes screening. Moreover, a weight under 60kg is not a criterion that would indicate a need for diabetes screening; instead, factors like obesity and weight management are more pertinent in assessing the risk for diabetes in this population.