BMI stands for Body Mass Index. We invite people with a BMI higher than 23 to join Slimming World, as it is above this level that the risk of diabetes begins to increase. People with a BMI higher than 25 are also at increased risk of developing other weight-related health problems.


As a member, your BMI will be re-calculated every time you update your weight profile. As you lose weight you'll see your BMI moving towards the healthiest range, between 20 and 23.