Study to Evaluate the Efficacy of a Polyamine-deficient Diet for Treating Postoperative Pain After Abdominal Surgery

The aim of this study is to evaluate if a polyamine deficient diet started 7 days prior to a major abdominal surgery (eventration cure and digestive continuity) and followed 7 days post-surgery reduces the area under the curve of the numerical pain rating scale in the 72 hours post-surgery.