Weight Loss Predictor

How much will you lose?

Weight Loss Timing

The final goal weight you reach depends on several factors including your 

  • build, 
  • body composition, 
  • sex and age. 


It also depends on how successfully after surgery you are in changing your:

  • dietary behaviours, 
  • lifestyle, and 
  • physical activity levels


The reason why we set a minimum goal of achieving 60% excess weight loss is because this level of weight loss will lead to maximal improvement in any weight-related co-morbidities.


Please note - up to 20% of patients are "non-responders" - that is, they may not reach the goal of at least 60% excess weight loss. Your surgeon will discuss the right option for you.


Weight Loss Timing

  • Sleeve Gastrectomy - most patients reach their goal weight by 12 months
  • Gastric Bypass - most patients reach their goal weight by 18 months


This roughly equates to losing between 0.5kg-2kg per week, depending on your starting weight.