IRCT2013072814195N1 IRCT 2013-09-05 Vice chancellor for research Lorestan University of Medical Sciences Vitamin D supplementation and obesity Effect of vitamin D supplementation on anthropometric indices and lipid profile among overweight and obese women : A Placebo-controlled Randomized Clinical trial 2013-08-23 anticipated 76 Complete https://irct.ir/trial/13846 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: patients will be randomly assigned into case and control groups. N/A Condition 1: obesity. Condition 2: overweight. Intervention 1: Patients in the control group receive oral placebo which are specifically designed to have no real effect. They are made of lactose.These pearls in terms of size, shape, packaging and name are exactly similar to the vitamin D pearls. Only the code written on the boxes are different from each other. Frequency and duration of using placebo pearls in the control group are absolutely the same as vitamin D pearls in the intervention group. One pearl will be given to the patients every 25 days until 4 doses. The pearls will be prepared from Daana Pharma Company. Intervention 2: Oral vitamin D supplement ( pearl ) 2000 IU/ d ( = 50 μg/d as cholecalciferol ) will be given to the intervention group until 3 months. Each pearl contains 50000 IU vitamin D3. One pearl will be given to the patients every 25 days until 4 doses. The pearls will be prepared from Daana Pharma Company.