Obesity now days leads to many high risk disorders. The objectives of study were to assess knowledge on obesity related disorders among obese adults before structured teaching programme, to assess knowledge on obesity related disorder among obese adults after structured teaching programme, to determine effectiveness of structured teaching program on obesity related disorder among obese adults. Quantitative approach was chosen for the research study. The research design used for the study was quasi-experimental. The study consists of 60 samples which are selected by Non Probability purposive sampling. Study was conducted at Selected area of Pune city. The major findings of the study were, mean pre-test score in control group was 44.06 and post test score was 18.06. The mean pre-test score in experimental group was 45.36 and post test was 37.96 which shown the effectiveness of structured teaching programme on knowledge level among the obese adults.