Endorsed by the International Federation for the Surgery of Obesity and Metabolic Disorders and the American Society for Metabolic and Bariatric Surgery, sleeve gastrectomy is gaining popularity in children and adolescents. Studies by Alqahtani and colleagues have found that sleeve gastrectomy causes large weight loss in children and adolescents aged 5 to 21 years. Moreover, they compared weight loss with adults and found comparable weight loss. Recent reports from the group show that growth progresses unaffected after sleeve gastrectomy in children younger than 14 years of age. Although this surgery helps immensely with losing weight the main side effect to this surgery afterwards in the depression that follows the weight loss. This may be because you are realizing that some foods may never be eaten again, or your chemical imbalance is thrown off. It could also be because of the lack of carbohydrates, which throws off the serotonin levels in your body. Another side effect is insomnia. Many people after this surgery can only sleep when they take melatonin or sleeping medications.