Age requirements for weight loss surgery vary by procedure. For example, gastric bypass surgery is typically only performed on patients over the age of 18, while gastric banding procedures may be performed on patients as young as 14 or 15. Some insurance companies also have age restrictions in place for coverage of weight loss surgery, so it's important to check with your individual carrier to see if they will cover the cost of a procedure. In general, though, most weight loss surgeries are considered safe for patients of all ages.