How Much Weight Will I Lose?

Hospitals & Locations > TriHealth Weight Management

The actual weight a patient will lose after weight loss surgery is dependent on several factors, including the patient’s:

  • Age
  • Weight before surgery
  • Overall health
  • Surgical procedure
  • Ability to exercise
  • Commitment to maintaining dietary guidelines and other follow-up care
  • Motivation and cooperation of family, friends and associates

In most cases, the following is true about weight loss after surgery:

  • Most patients lose weight rapidly after surgery and continue to do so until 18 to 24 months after the procedure.
  • Patients may lose 30 to 50 percent of their excess weight in the first six months and 77 percent of excess weight as early as 12 months after surgery.
  • Patients can maintain a 50 to 60 percent loss of excess weight 10 to 14 years after surgery. 

Key facts to consider:

Patients with higher initial BMIs tend to lose more total weight. Calculate your BMI.

  • 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. 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.

In general, weight loss surgery success is defined as achieving loss of 50 percent or more of excess body weight and maintaining that level for at least five years. Clinical data will vary for different procedures. Results may also vary by surgeon. Ask your doctor for the clinical data stating their results of the procedure they are recommending.

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