Obesity is a complex health condition characterized by excessive excess body fat, which can have effects on physical and emotional health. In the contemporary world, obesity has become a global epidemic, affecting people of all ages, genders and ethnic backgrounds. Understanding obesity and its intrinsic relationship to nutrition is critical to effectively addressing this issue. Definition of Obesity and its Causes Obesity is defined by the body mass index (BMI), a measure that relates an individual's weight to height. A BMI of 30 or more indicates obesity. However, obesity is not just a matter of aesthetics. It is associated with a number of serious health problems, including type 2 diabetes, heart disease, hypertension, sleep apnea and various forms of cancer. The causes of obesity are multifactorial and complex. They involve the interaction between genetic, environmental, behavioral and metabolic factors. The abundant availability of high-calorie foods rich in vitamins and sugars, a