IRCT20120525009856N7 IRCT 2018-06-13 Kermanshah University of Medical Sciences Investigating the synergist effect of probiotic and vitamin D in obesity Investigating the effect of probiotic and 25OHD3 with low-calorie diet on satiety and hunger hormones and vitamin D in obese people 2018-04-21 anticipated 140 Complete https://irct.ir/trial/29748 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Individual randomization with out layering, Four blocks randomized Blocks will determined daily and write on paper Selecting randomized blocks will done by somebody except researcher, Blinding description: The appearance of yogurts are the same The main investigator will not be aware of yogurt's content and the group which subjects are in. The person who analyze date will be unaware of the group which each subject belong. 3 Obesity. Intervention 1: The first intervention group: low calorie diet and 100 g/day yogurt enriched with 1000 IU 25OHD3. Intervention 2: The second intervention group: low calorie diet and 100 g/day probiotic yogurt enriched with 1000 IU 25OHD3. Intervention 3: The third intervention group: low calorie diet and 100 g/day probiotic yogurt. Intervention 4: The control group: low calorie diet and 100 g/day traditional yogurt. No - There is not a plan to make this available Justification or reason for not sharing IPD is No more information