Nutrition Guidelines Before Bariatric Surgery

Before bariatric surgery, patients undergo a comprehensive clinical assessment to determine suitability for surgery
and to support safe perioperative planning. This includes a review of medical history, eating patterns, lifestyle factors,
weight history, and relevant investigations as required.
A structured pre-operative nutrition plan is commonly recommended prior to surgery. This is often referred to as a
liver reduction diet. The aim of this dietary approach is to reduce liver size and fat content, which can improve access
to the stomach during surgery. A smaller liver may assist with the technical aspects of the procedure and may reduce
the risk of intraoperative complications.
Evidence suggests that short-term pre-operative dietary modification can improve surgical conditions and may
contribute to improved perioperative outcomes.
The duration and specific requirements of the pre-operative diet vary depending on individual factors such as BMI,
metabolic health, and liver size. As a result, the dietary plan is individualised rather than standardised for all patients.
At MBSA, you will be supported by an in-house, experienced bariatric dietitian who plays a key role in your
pre-operative preparation. You will be reviewed at least twice before surgery to ensure you are well supported,
confident with the dietary plan, and progressing appropriately. These consultations provide education, practical
guidance, and personalised adjustments where needed.
This structured approach helps ensure patients are nutritionally prepared and optimised prior to surgery.