From Fat Cell to Fit Tech: Review on Management and Monitoring of Obesity and Role of Wearable Device

Obesity is a complex global health concern that is associated with increased rates of illness, death, and financial hardship. Traditional monitoring techniques, such as BMI and routine lab testing, usually fail to record the physiological and behavioral information required for real-time early intervention. The management of obesity has seen a revolution thanks to wearable health technology (WHTs), which offer continuous monitoring of metabolic indicators, sleep, stress, physical activity, and caloric expenditure. This review explores how WHTs can be integrated with telemedicine, smart textiles, and artificial intelligence to deliver personalized, predictive care. Clinical studies and systematic reviews have demonstrated that wearable-based therapies enhance behavioral adherence, weight loss, and metabolic outcomes. However, there are still problems with cost, privacy, data accuracy, and user compliance. These problems need to be fixed if wearables are to be extensively utilized in therapeutic contexts. The report concludes by outlining possible future directions, including implantable sensors, AI-enhanced analytics, and ethical data governance, to optimize the treatment of obesity and prevent chronic diseases.