Regaining weight after gastric bypass

The gastric bypass technique is a surgical intervention that has demonstrated its effectiveness in the treatment of obesity. However, it should be mentioned that in some cases, and after years, the lost weight can be regained. The average weight lost in gastric bypass is almost 70%.

There are several studies that suggest that a large proportion of patients maintain a loss of excess weight of at least half for ten years after gastric bypass surgery. The excess weight loss is similar to what can be achieved with other surgical techniques.

However, in certain cases a stabilization point is reached and a percentage of patients who had previously undergone gastric bypass surgery eventually regain their original weight.

In fact, according to a study published in Bariatric Times, about 30% of patients who undergo gastric bypass surgery gain weight two years after the operation. At four years, the percentage of patients who have undergone surgery who have gained weight is 66%.

Causes of weight gain after gastric bypass surgery

  • Not having followed the guidelines, changes in habits and lifestyle proposed by the specialist to the letter.
  • Lack of psychological support to treat anxiety disorders.
  • Consumption of alcohol and/or drugs
  • Dilatation of ducts
  • Changes in metabolism
  • Thinking or believing that with gastric bypass “everything is done”.

Repairing a failed gastric bypass: Is it necessary to operate again?

When the gastric bypass fails due to dilatation of the gastric reservoir, techniques can be used to repair it with an endoscopic approach.

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An example would be the ROSE system, which allows endoscopic repair of gastric bypass cases.

The technique is based on the placement of between four and six perianastomotic sutures that aim to make the diameter smaller, up to between five and eight mm in diameter. Thus, the bypass is closed again, repairing the defect and giving the patient the sensation of being satiated sooner.

This is an effective and safe alternative to get the bypass to return to its initial point, the one that facilitated the patient’s weight loss.