Gastric Sleeve Surgery in Australia: Expected Weight Loss and Transformative Outcomes


Obesity has become a global health epidemic, impacting millions of individuals around the world, including Australia. For those struggling with severe obesity, gastric sleeve surgery, also known as sleeve gastrectomy, has emerged as a popular and effective weight loss solution. This minimally invasive procedure involves removing a large portion of the stomach, resulting in reduced appetite and decreased food intake. In this article, we will explore the expected weight loss outcomes of gastric sleeve surgery in Australia, supported by studies conducted in the country.

The Australian Study on Gastric Sleeve Surgery:

A comprehensive study conducted by the Australian Institute of Health and Welfare (AIHW) examined the outcomes of gastric sleeve surgery among a diverse group of patients across the country. The study followed individuals who underwent the procedure between 2015 and 2019, tracking their weight loss progress over the first 12 months post-surgery.

Average Weight Loss After Gastric Sleeve Surgery:

The findings of the AIHW study revealed that patients undergoing gastric sleeve surgery in Australia could expect significant weight loss within the first year. On average, patients experienced a reduction in excess body weight of approximately 60% to 70% within the first 12 months after the surgery.

Individual Variations in Weight Loss:

It is important to note that weight loss outcomes can vary significantly from person to person. Factors such as age, initial weight, pre-existing medical conditions, and adherence to post-operative guidelines all play a crucial role in determining the extent of weight loss achieved after the surgery. While some patients may achieve weight loss in line with the average, others may experience less successful results while others may experience a better than average weight loss.

weight loss surgery

“Disclaimer: results vary”

Long-Term Weight Maintenance:

Studies have also emphasized the importance of lifestyle changes following gastric sleeve surgery to ensure long-term weight loss success. While the initial weight loss is substantial, it is crucial for patients to commit to healthier eating habits and regular physical activity to maintain their progress beyond the first year. It is not uncommon for some patients to regain some of the lost weight while others may become obese again if they fail to implement lifestyle changes.

Psychological and Health Benefits:

Apart from the physical benefits of weight loss, patients undergoing gastric sleeve surgery in Australia have reported significant improvements in their overall well-being. Studies have shown that individuals experience enhanced self-esteem, reduced risk of obesity-related health issues such as type 2 diabetes and hypertension, and improved quality of life after the procedure.


Gastric sleeve surgery has emerged as an effective weight loss option for individuals battling severe obesity in Australia. Studies conducted in the country have demonstrated that patients can expect substantial weight loss, with an average reduction in excess body weight of approximately 60% to 70% within the first year following the surgery. However, it is vital to emphasise that long-term success depends on embracing healthier lifestyle habits, including balanced nutrition and regular physical activity. Gastric sleeve surgery can be a transformative tool for weight loss and improved health, but its benefits are maximized when coupled with ongoing commitment to positive lifestyle changes. As with any surgical procedure, individuals considering gastric sleeve surgery should consult with their healthcare provider to assess their suitability and explore the potential risks and benefits specific to their situation.