IRCT20230722058887N1 IRCT 2023-08-21 Tehran University of Medical Sciences Comparison of intervention after bariatric surgery Effect of an intervention, based on Health Action Process Approach, on obesity surgery outcomes in patients undergone bariatric surgery after one year 2023-09-16 anticipated 90 Complete https://irct.ir/trial/71530 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: Random allocation: with a computer program, by randomizing alternative blocks with the length of random variable blocks of 2, 4 and 6 And the ratio is 1:1 Consecutive sampling method, 90 people are selected from the center and entered into the sample from among the people who had the conditions to enter the study and did not have the conditions to leave the study. N/A Bariatric surgery patients. Intervention group: Intervention group: For only the intervention group, we sent a training class, pamphlets and educational SMS. 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 It should be thought about