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This cross-sectional study aimed to determine the prevalence of obesity and perceived barriers to weight loss in 1453 Bahraini adults who had used any intervention to lose weight in the past year. We found a high prevalence (78.2%) of overweight and obesity. Females were more likely to have obesity compared to males (81.4% vs. 66.7%). Older individuals aged 36-45 were 3.37 times, and 45 or older were 3.56 times more likely to have obesity. Married participants had higher odds of obesity compared to single participants (OR=1.79). Participants with obesity were more likely to be unemployed compared to students (OR=1.49). The most common contributing factors to weight gain were lack of physical activity (29.5%) and unhealthy diet (29.2%). Participants with obesity were more likely to have relied on dieting (OR=2.53) or exercise (OR=1.47) for weight loss and used medication (OR=5.23). This study highlights the complex relationship between sociodemographic factors, lifestyle behaviors, and obesity and sustaining weight loss.