How this calculator works
In the UK, surgery is usually considered with a BMI of 40 or more, or between 35 and 39.9 with a weight-related condition such as type 2 diabetes or high blood pressure. Lower thresholds apply for some family backgrounds.
Gastric balloons are designed for people with a BMI between 30 and 40. A specialist will check whether it suits you.
On average, people lose about 31% of their body weight in the first year after a gastric bypass and about 25% after a gastric sleeve. Your result depends on your health and the changes you make.
No. It is a guide based on published guidelines and averages. A specialist will review your full medical history before recommending any treatment.
