Background: Obesity is a rapidly increasing disease in developed and developing countries. Almost 12% of adults around the world are considered obese. Obesity-associated with other serious illnesses puts the patient’s life in danger, as well as decreasing their quality of life. This disease has some known risk factors but the exact pathophysiology remains a mystery need to be solved. Objectives: We aimed to review the literature reviewing the etiology of obesity, risk factors, diagnosis, complication, and management of this disease. Methodology: PubMed database was used for article selection, gathered papers had undergone a thorough review. Conclusion: With obesity, multiple other diseases emerge as well; which in their turn aggravates the disease in a vicious cycle. The management plan of each patient is unique, depending on the patient’s background, comorbidities, degree of obesity, and level of cooperation. Serious complications can be avoided by weight loss, even if it was minimum. With a variety of treatment options in hand, the family physician should explore and discuss this matter thoroughly with the patient to reach optimum outcomes.