Use our BMI calculator and read the suitability criteria to understand whether gastric sleeve surgery may be appropriate to discuss with our medical team.
BMI (Body Mass Index) is calculated from your height and weight. It is one of the first indicators used when assessing whether gastric sleeve surgery may be appropriate. Enter your measurements below.
BMI is a guide only. It does not account for all individual health factors. Final suitability is always confirmed through a full medical assessment.
The following criteria are general guidelines used when considering gastric sleeve surgery. Meeting these criteria does not guarantee surgical approval — all patients require an individual medical assessment.
A BMI of 30 is generally the starting threshold for discussing bariatric surgery. Patients with BMI between 30–35 who have obesity-related health conditions may also be considered.
Patients who have made genuine, sustained attempts to lose weight through diet and lifestyle change without long-term success.
Type 2 diabetes, high blood pressure, sleep apnoea, joint problems and other conditions linked to excess weight may strengthen the case for surgery.
Patients must be prepared to follow the post-operative nutrition plan and lifestyle guidance. Long-term results depend significantly on this commitment.
Certain conditions may affect suitability. These are assessed during the pre-operative medical evaluation:
This is not an exhaustive list. All contraindications are assessed individually during the pre-operative process. Sending your details for assessment does not commit you to proceeding.