Clinical Research Directory

Inclusion Criteria: 1. For women: * 20 to 40 years of age. * Diagnosed with gestational diabetes mellitus during the most recent pregnancy. * Have basic literacy and sufficient cognitive and physical ability to participate in the study. * Living with their spouse. * Able to use a smartphone. * Willing to participate in the study. 2. For spouses: * Living with an eligible woman with a history of gestational diabetes mellitus. * Have basic literacy and sufficient cognitive and physical ability to participate in the study. * Able to use a smartphone. * Willing to participate in the study. Exclusion Criteria: 1. For women: * Diabetes diagnosed before pregnancy or after delivery. * Pregnant at the time of screening. * Currently using medications that affect glucose metabolism or medications for weight loss. * Cognitive impairment or a serious psychiatric disorder. * A contraindication to postpartum exercise. * Current participation in another lifestyle intervention program. 2. For spouses: * A diagnosed major chronic disease, such as coronary heart disease or diabetes, or another serious physical illness. * Cognitive impairment or a serious psychiatric disorder. * Current participation in another lifestyle intervention program. Women with a history of gestational diabetes mellitus and their spouses will be recruited during postpartum follow-up visits at the participating hospitals. Both members of the couple must meet their respective eligibility criteria.