Assessing the effectiveness of health belief model-based educational interventions on weight control intentions among Malaysians

Obesity and overweight are major health concerns, with a 19.7% prevalence among Malaysian adults, as reported in the 2019 National Health and Morbidity Survey. This study assessed the effectiveness of an educational intervention on weight control intention using the Health Belief Model (HBM). A quasi-experimental design was employed, involving 140 participants equally divided into an intervention group (IG) and a control group (CG). Post-intervention, the IG showed significant improvement in perceived self-efficacy in dieting (mean score 3.96 ± 0.85) compared to the CG (3.76 ± 0.86, p = 0.003). Perceived self-efficacy in exercise also increased in the IG (4.12 ± 0.52) compared to the CG (3.51 ± 0.94, p < 0.001). While behavioral intention scores improved in the IG (4.00 ± 0.59), the difference was not significant (p = 0.300). This study highlights that educational interventions using HBM can effectively improve self-efficacy and influence weight control behaviors.