Obesity is a complex medical condition characterized by an excess of body fat that poses health risks to individuals. It is typically assessed using body mass index (BMI), with a BMI of 30 or higher classified as obese. Obesity can result from a combination of genetic, behavioral, and environmental factors, including poor diet, lack of physical activity, and certain medical conditions or medications. It is associated with numerous health problems such as type 2 diabetes, heart disease, hypertension, sleep apnea, and certain cancers. Additionally, obesity can have a significant impact on mental health, contributing to issues like depression and low self-esteem. Managing obesity often involves a multifaceted approach, including dietary changes, increased physical activity, behavioral therapy, and sometimes medication or surgery. Prevention strategies such as promoting healthy eating and regular exercise from an early age are key to addressing the obesity epidemic. Combating obesity requires a comprehensive public health approach to create environments that support healthier lifestyle choices.