The term "quality of life" usually describes factors that have an impact on living conditions within the society or on an individual. Generally, the term quality of life refers to the level of the welfare of individuals or group of people. Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have an adverse effect on health and as such is one of the most common pathological conditions of modern society. Almost 10-25% of adult population in Europe, 1/3 population in the USA and 20% of population in Croatia are affected by obesity. In this prospective study we included 30 patients who underwent Sweedish adjustable gastric band procedure (SAGB) (Johnson & Johnson) procedures without complications during the first year of the postoperative period. Body mass index (BMI) was in female patients 40,52174 kg/m2 and in male patients 46,71429 kg/m2. Prior to the surgical procedures 13 patients (43.33%) experienced worse health conditions. Health conditions were equl in 17 patients. The treatment was ineffective in 5 patients (16.67%). In 5 patients health conditions were equal. 6 patients (20%) had good quality of life, 11 patients (36.67%) very good and only 3 patients (10%) had excellent quality of life after the procedure. We noticed body weight reduction in all patients. The quality of life was improved in all patients, except for one 28 years old woman. Body weight loss and quality of life after the procedure are in positive correlation which means that significant body weight loss leads to improved quality of life. Our conclusion is that SAGB is a quality method in obesity treatment which improves quality of life.