Effects of Vitamin D and Calcium on Hyperglycemia and Dyslipidemia in Patients Gestational Diabetes

A randomized controlled trial study design will be used to assess the efficacy of vitamin D and calcium supplementation in lipid profiles and glycemic index among women with GDM. The sample for the study will consist of 60 pregnant women diagnosed with GDM, aged 18-40 years, and between 24-28 weeks of gestation. Recruitment of participants will be done in antenatal clinics linked to \[Lady Willingdon Hospital Lahore\]. The diagnosis of GDM will be performed according to the results of OGTT following the international criteria. Participants will be randomly divided to one of two groups: * Intervention Group: This group will receive 600 IU of vitamin D3 and 1.5-2 g of calcium daily for 6 weeks. * Control Group: This group will receive a placebo containing no active ingredients. For randomization, a computer-generated sequence will be used to randomly assign participant into the intervention arm or the placebo arm. The study will be conducted as double blind; the participants and the researchers shall not know the group allocations.