Abstract: Sleeve Gastrectomy (SG) is very famous for being used in treating obese individuals. The present study was carried out in order to examine the long-term weight-losing outcomes after Laparoscopic Sleeve Gastrectomy (LSG) reported in other studies that had carried out appropriate follow-ups after the surgery. Keywords like sleeve gastrectomy, obesity and long-term outcomes were used to search PubMed database which led to finding 16 appropriate studies. Over 5 and more years 492 patients had been followed up after laparoscopic sleeve gastrectomy who were included in the present study. Among them, 71% were female and their mean age was 45.2 year. The results of the present study indicated that BMI before the surgery among the patients of 16 studies was 49.2. The mean weight reduction was 62, 54, 43 and 55% of their overweight respectively in 5, 6 and 7 year after LSG. It seems that in LSG 5 and even more years after it, the rate of weight reduction becomes stable and it can be used as an appropriate method to reduce weight among the obese individuals.