Effect of Intensive Nutrition Training, Education, and Support in Gestational Diabetes - The INTENSE-GDM TRIAL

Inclusion Criteria: * Newly diagnosed women with GDM referred to Department of Obstetrics Herlev Hospital * Women diagnosed with GDM based on 2-hour OGTT plasma glucose value ≥ 9.0 mmol/l * Women diagnosed with GDM based on at least 2 plasma glucose measurements above targets (either pre-prandial ≥6.0 mmol/l, or 2-hours postprandial ≥8.0 mmol/l) * GA at GDM diagnosis ≤ 34 * Women with an estimated probability of ≥20% for initiating insulin treatment during pregnancy. The estimated probability is based on a logistic regression model developed at SDCC and includes the following variables: prepregnancy BMI, GA at GDM diagnosis, and HbA1c at GDM diagnosis. In cases where HbA1c has not been measured during the initial visit with the dietitian (screening visit), prepregnancy BMI, GA at the time of diagnosis and 2H OGTT will be used to estimate the probability of initiating insulin therapy. * Provided voluntary written informed parental consent in Danish or English or after translation by an interpreter for non-Danish and non-English speaking parents Exclusion Criteria: * Bariatric surgery * Other intercurrent illness (e.g., cancer, ulcerative colitis) as judged by medical experts * Uncontrolled medical issues, as judged by medical experts * Concomitant participation in other clinical trials that could interfere with the INTENSE- GDM Trial as evaluated by the principle investigator * Unable to understand the informed consent/procedures regardless of spoked language