Weight regain is possible after sleeve gastrectomy. This is frequently observed, especially among patients who neglect post-operative follow-ups and do not adopt the recommended lifestyle changes. The body's self-preservation mechanism tends to keep energy stores full, and excessive caloric intake can lead to weight gain. Therefore, adherence to the post-sleeve gastrectomy nutritional plan is of great importance. By avoiding low-volume but high-energy liquid or semi-solid foods such as chocolate, ice cream, and rice pudding, and by diligently adhering to dietary rules, weight regain can be prevented.