SHBG and gestational diabetes: It is consistent with the results of the study enrolling 42,034 women in whom the risk of development of type 2 diabetes increased by 299% when SHBG levels were in the range from 40 to 49.99 nmol/L [19] and the study showing that the risk of gestational diabetes development increased five-fold with median SHBG levels below 64.5 nmol/L [21].