IRCT20130227012628N3 IRCT 2023-02-21 Shiraz University of Medical Sciences The effect of probiotic-enriched kefir drinks on elderly overweight and obese participants The effect of probiotic-enriched kefir compared to regular kefir drinks on stress oxidative and inflammatory markers in elderly overweight and obese participants: a randomized clinical trial 2023-04-04 anticipated 72 Complete https://irct.ir/trial/68630 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: -, Randomization description: Before beginning the study, an outsider who is familiar with the randomization method prepares 4 blocks of random blocks, then randomly identifies the sequences and groups them in a closed envelope, named A, B, C, and D. After the individuals enter the study, the sealed envelopes containing the assigned group of participants will be opened for each participant based on the sequence determined by the person outside the study, Blinding description: The appearance of the kefir drinks in which they are packaged are quite similar. The drinks will be named with the Latin letters A and B. In the clinical phase of the study, the random allocation sequence is done with the same letters. Therefore, the researcher and all participants will be blinded to the intervention. 3 Elderly. Intervention group: Group 1 receives the probiotic-enriched kefir drinks. Group 2 receives the kefir drink.. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information.