Which of the following is a common risk factor for gestational diabetes?

A family history of diabetes is indeed a common risk factor for gestational diabetes. When a close relative, such as a parent or sibling, has diabetes, the likelihood of developing gestational diabetes increases. This is likely due to genetic factors that influence insulin resistance and glucose metabolism, which are critical in the development of diabetes during pregnancy.

In contrast, other factors such as low body mass index and regular exercise are generally associated with a lower risk of developing gestational diabetes. Age under 25 is also less commonly linked to an increased risk, as gestational diabetes tends to be more prevalent in women who are older. Therefore, understanding the influence of family history highlights its significance as a risk factor in the context of gestational diabetes.