Obesity is a complex medical condition characterized by an excessive accumulation of body fat, often associated with a high-calorie diet, physical inactivity, and genetic predisposition. It significantly increases the risk of numerous health issues, including heart disease, type 2 diabetes, stroke, high blood pressure, certain cancers, and sleep apnea. Addressing obesity through lifestyle changes, such as improved diet and regular exercise, is crucial to reducing these risks and improving overall health.