Introduction: Obesity is a form in which there is fat collection of body overweight or adipose tissue. This accumulation happens in lean body mass of muscles and unlike connective tissue. Obesity is consummate constantly defined by the body mass index (BMI), a mathematically formula of weight-for-height index. BMI has a high interaction with adiposity and it interacts well with fat weight at the population rank. Obesity is defined as abnormal all excessive accumulation that may be harmful to health. Although, its etiology has been associated with and energy imbalance between calories consumed and calories expended, which is mainly as a result of a poor diet and insufficient physical exercise. Obesity is a worldwide epidemiologic syndrome depict by fat mass accumulation, mainly visceral fat. Obesity cause several diseases like genetic and metabolic issues, urea cycle problems, turner syndrome, Down syndrome, cystic fibrosis and Wilson's disease etc. Several factors are the cause of obesity like high sugar consumption but by taking some precautionary measures we can be secure from obesity.