is surgery effective?

 The actual weight a patient will lose after the procedure is dependent on several factors.

These include:

·         Patient's age

·         Weight before surgery

·         Overall condition of patient's health

·         Surgical procedure

·         Ability to exercise

·         Commitment to maintaining dietary guidelines and other follow-up care

·         Motivation of patient and cooperation of their family, friends and associates

The percentage of excess weight loss (%EWL) is a common metric for reporting weight loss after bariatric surgery. Excess weight is the amount of extra weight an individual has compared to how much they should weigh. Percentage of excess weight is then multiplied by 100. In general, weight loss surgery success is defined as achieving loss of 50% or more of excess body weight and maintaining that level for at least five years. The percentage of excess weight loss is impacted by the specific bariatric surgery and the individual patient.

The following is the standard expectations of weight loss at one year:

  • LapBand - 45% EWL

  • Sleeve Gastrectomy - 50% EWL

  • Gastric Bypass - 70% EWL

  • The following is the standard expectations of weight loss at five years:

  • LapBand - 55% EWL

  • Sleeve Gastrectomy – no long term data

  • Gastric Bypass - 58% EWL

Standard expectations of weight loss is just that; what any individual can routinely expect. For any individual to see better weight loss results both at one year and at five years as listed above they must adhere closely to portion control, food choices, protein intake, low calorie fluids, pre-planning, avoid grazing, exercise, vitamin & mineral supplement, and follow-up care from bariatric surgeons program.

Clinical studies show that, following surgery, most patients lose weight rapidly and continue to do so until 18 to 24 months after the procedure. Patients may lose 30 to 50% of their excess weight in the first six months and 77% of excess weight as early as 12 months after surgery. Another study showed that patients can maintain a 50-60% loss of excess weight 10-14 years after surgery. Patients with higher initial BMIs tend to lose more total weight. Patients with lower initial BMIs will lose a greater percentage of their excess weight and will more likely come closer to their ideal body weight. Patients with Type 2 Diabetes tend to show less overall excess weight loss than patients without Type 2 Diabetes. The surgery has been found to be effective in improving and controlling many obesity-related health conditions. A 2000 study of 500 patients showed that 96% of certain associated health conditions studied (back pain, sleep apnea, high blood pressure, diabetes and depression) were improved or resolved. For example, many patients with Type 2 Diabetes, while showing less overall excess weight loss, have demonstrated excellent resolution of their diabetic condition, to the point of having little or no need for continuing medication.

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