The actual weight a patient will lose after the procedure
is dependent on several factors. These include:
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. Clinical data will vary for each of
the different procedures mentioned on this site. Results may also
vary by surgeon. Ask your doctor for the clinical data stating
their results of the procedure they are recommending.
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
How Effective Is Surgery
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