Weight loss surgery, or bariatric surgery, has proven effective for significant, sustained weight loss in individuals with severe obesity. However, it also comes with long-term effects that require careful management. Nutritional deficiencies, digestive issues, and psychological challenges can emerge post-surgery, necessitating lifelong dietary supplements and regular medical follow-ups. Despite these considerations, weight loss surgery has positive long-term impacts on reducing obesity-related conditions, such as diabetes, hypertension, and sleep apnea. Understanding and preparing for both the benefits and challenges associated with weight loss surgery helps individuals make informed decisions about their obesity treatment options.