What is BMI and why do you
use it as a measure?

The Body Mass Index calculation is a basic and widely accepted way to measure if you're overweight or obese. It's calculated like this:

Medical professionals use BMI to assess health risks. For example, the higher your BMI the higher your risk of certain diseases such as high blood pressure, heart disease, type 2 diabetes, gallstones, breathing problems and some cancers.

We use it to help determine the plan that's most suited to you.