The linkage of the two conditions is via insulin resistance. Gestational diabetes is cause by insulin resistance. One of the consequences of insulin resistance is an increase in cortisol. Increased cortisol levels increase depression.
Depression during and after pregnancy may be linked to gestational diabetes, a new government study found. Women in the study who reported feeling depressed early in pregnancy were more likely to develop gestational diabetes later in pregnancy compared with those who did not report depression early in pregnancy, according to the study, from researchers at the National Institute of Child Health and Human Development (NICHD).